{"id":12093,"date":"2026-07-08T11:44:22","date_gmt":"2026-07-08T03:44:22","guid":{"rendered":"https:\/\/www.cybermedian.com\/de\/comprehensive-guide-to-dfd-logical-vs-physical-with-graphviz-examples\/"},"modified":"2026-09-03T23:27:12","modified_gmt":"2026-09-03T15:27:12","slug":"comprehensive-guide-to-dfd-logical-vs-physical-with-graphviz-examples","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/de\/comprehensive-guide-to-dfd-logical-vs-physical-with-graphviz-examples\/","title":{"rendered":"Umfassender Leitfaden zu DFD: Logisch vs. Physisch mit Graphviz-Beispielen"},"content":{"rendered":"<p><iframe allow=\"fullscreen; accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\" class=\"__youtube_prefs__ epyt-is-override no-lazyload\" data-no-lazy=\"1\" data-origheight=\"456\" data-origwidth=\"810\" data-skipgform_ajax_framebjll=\"\" height=\"456\" id=\"_ytid_25837\" loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/OOPBmkcdJKo?enablejsapi=1&amp;autoplay=0&amp;cc_load_policy=0&amp;cc_lang_pref=&amp;iv_load_policy=1&amp;loop=0&amp;modestbranding=0&amp;rel=1&amp;fs=1&amp;playsinline=0&amp;autohide=2&amp;theme=dark&amp;color=red&amp;controls=1&amp;\" title=\"YouTube player\" width=\"810\"><\/iframe><\/p>\n<h2>1. Einf\u00fchrung in Datenflussdiagramme<\/h2>\n<p>Ein Datenflussdiagramm (DFD) ist eine grafische Darstellung, wie Daten durch ein Informationssystem flie\u00dfen. Es zeigt:<\/p>\n<ul>\n<li>Woher Daten kommen und wohin sie flie\u00dfen<\/li>\n<li>Wie Daten verarbeitet werden<\/li>\n<li>Wo Daten gespeichert werden<\/li>\n<li>Wer oder was mit dem System interagiert<\/li>\n<\/ul>\n<p id=\"EcYDADG\"><img alt=\"Vergleichs-Infografik, die die Unterschiede zwischen logischen und physischen Datenflussdiagrammen veranschaulicht.\" class=\"alignnone size-full wp-image-19316\" decoding=\"async\" height=\"572\" loading=\"lazy\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc7473f087.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc7473f087.png 1024w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc7473f087-300x168.png 300w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc7473f087-768x429.png 768w\" width=\"1024\"\/><\/p>\n<hr\/>\n<h2>2. Schl\u00fcsselkonzepte<\/h2>\n<h3>Kernelemente<\/h3>\n<table>\n<thead>\n<tr>\n<th>Element<\/th>\n<th>Symbol<\/th>\n<th>Zweck<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Externe Entit\u00e4t<\/strong><\/td>\n<td>Rechteck<\/td>\n<td>Person, Organisation oder System, das Daten sendet\/empf\u00e4ngt<\/td>\n<\/tr>\n<tr>\n<td><strong>Prozess<\/strong><\/td>\n<td>Kreis\/Ellipse<\/td>\n<td>Verwandelt eingehende Daten in ausgehende Daten<\/td>\n<\/tr>\n<tr>\n<td><strong>Datenspeicher<\/strong><\/td>\n<td>Offenes Rechteck<\/td>\n<td>Repository f\u00fcr persistente Datenspeicherung<\/td>\n<\/tr>\n<tr>\n<td><strong>Datenfluss<\/strong><\/td>\n<td>Pfeil<\/td>\n<td>Zeigt die Richtung der Datenbewegung an<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>DFD-Ebenen<\/h3>\n<ol>\n<li><strong>Kontextdiagramm (Ebene 0)<\/strong>: H\u00f6chste Ebene, zeigt Systemgrenzen und wichtige externe Entit\u00e4ten<\/li>\n<li><strong>Ebene 1<\/strong>: Zerlegt den Hauptprozess in wichtige Teilprozesse<\/li>\n<li><strong>Ebene 2+<\/strong>: Weitere Zerlegung, die detaillierte Prozesse zeigt<\/li>\n<\/ol>\n<hr\/>\n<h2>3. Logische vs. physische DFDs<\/h2>\n<h3>Logische DFD<\/h3>\n<p id=\"yFElbTX\"><img alt=\"Logisches DFD-Diagramm, das Gesch\u00e4ftslogik und Aktivit\u00e4ten zeigt, die unabh\u00e4ngig von Hardware- oder Softwarebeschr\u00e4nkungen sind.\" class=\"alignnone size-full wp-image-19327\" decoding=\"async\" height=\"627\" loading=\"lazy\" sizes=\"auto, (max-width: 627px) 100vw, 627px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4e28ba4cd22.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4e28ba4cd22.png 627w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4e28ba4cd22-300x300.png 300w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4e28ba4cd22-150x150.png 150w\" width=\"627\"\/><\/p>\n<p>Eine <strong>logische DFD<\/strong> (auch als \u201ewesentliches Modell&#8221; bezeichnet) konzentriert sich auf:&#8221;<\/p>\n<ul>\n<li><strong>WAS<\/strong> das System tut<\/li>\n<li>Gesch\u00e4ftsaktivit\u00e4ten und Informationsanforderungen<\/li>\n<li>Unabh\u00e4ngig von der Implementierungstechnologie<\/li>\n<\/ul>\n<p><strong>Eigenschaften:<\/strong><\/p>\n<ul>\n<li>Zeigt Gesch\u00e4ftsabl\u00e4ufe und Prozesse<\/li>\n<li>Keine technologie-spezifischen Details<\/li>\n<li>Abstrakter und benutzerorientierter<\/li>\n<li>Hilft, Gesch\u00e4ftsanforderungen zu verstehen<\/li>\n<\/ul>\n<h3>Physische DFD<\/h3>\n<p id=\"vTzCKpc\"><img alt=\"Diagramm, das die Komponenten eines physischen DFD zeigt: Hardware, Software, Personen und technische Beschr\u00e4nkungen.\" class=\"alignnone size-full wp-image-19328\" decoding=\"async\" height=\"626\" loading=\"lazy\" sizes=\"auto, (max-width: 626px) 100vw, 626px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4e28c904788.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4e28c904788.png 626w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4e28c904788-300x300.png 300w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4e28c904788-150x150.png 150w\" width=\"626\"\/><\/p>\n<p>Eine <strong>physische DFD<\/strong> (auch als \u201eImplementierungsmodell&#8221; bezeichnet) konzentriert sich auf:&#8221;<\/p>\n<ul>\n<li><strong>WIE<\/strong> das System implementiert wird<\/li>\n<li>Technische Details und Einschr\u00e4nkungen<\/li>\n<li>Spezifische Technologien und Systeme<\/li>\n<\/ul>\n<p><strong>Eigenschaften:<\/strong><\/p>\n<ul>\n<li>Zeigt tats\u00e4chliche Hardware, Software und Personen<\/li>\n<li>Enth\u00e4lt Implementierungsdetails<\/li>\n<li>Konkreter und entwicklerorientierter<\/li>\n<li>Hilft bei Systemdesign und -bereitstellung<\/li>\n<\/ul>\n<h3>Vergleichstabelle<\/h3>\n<table>\n<thead>\n<tr>\n<th>Aspekt<\/th>\n<th>Logisches DFD<\/th>\n<th>Physisches DFD<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Fokus<\/strong><\/td>\n<td>Gesch\u00e4ftsbed\u00fcrfnisse<\/td>\n<td>Umsetzung<\/td>\n<\/tr>\n<tr>\n<td><strong>Wer<\/strong><\/td>\n<td>Business Analysten, Benutzer<\/td>\n<td>Systemdesigner, Entwickler<\/td>\n<\/tr>\n<tr>\n<td><strong>Ebene<\/strong><\/td>\n<td>Hochlevelig, abstrakt<\/td>\n<td>Detailliert, konkret<\/td>\n<\/tr>\n<tr>\n<td><strong>Komponenten<\/strong><\/td>\n<td>Gesch\u00e4ftsprozesse<\/td>\n<td>Technische Prozesse<\/td>\n<\/tr>\n<tr>\n<td><strong>Datenspeicher<\/strong><\/td>\n<td>Konzeptionelle Entit\u00e4ten<\/td>\n<td>Physische Dateien\/Datenbanken<\/td>\n<\/tr>\n<tr>\n<td><strong>Entit\u00e4ten<\/strong><\/td>\n<td>Gesch\u00e4ftsrollen<\/td>\n<td>Tats\u00e4chliche Systeme\/Ger\u00e4te<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr\/>\n<h2>4. DFD-Komponenten<br \/>\n<img alt=\"Symbole f\u00fcr Datenflussdiagramme (DFD) - EdrawMax\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/dfd-basic-symbol.jpg\"\/><\/h2>\n<h3>Externe Entit\u00e4ten<\/h3>\n<ul>\n<li>Quellen und Ziele von Daten<\/li>\n<li>Au\u00dferhalb der Systemgrenze<\/li>\n<li>Benannt mit Substantiven<\/li>\n<\/ul>\n<h3>Prozesse<\/h3>\n<ul>\n<li>Transformieren Daten von Eingabe zu Ausgabe<\/li>\n<li>Benannt mit Verb + Substantiv<\/li>\n<li>Nummeriert zur Identifizierung<\/li>\n<\/ul>\n<h3>Datenspeicher<\/h3>\n<ul>\n<li>Persistente Datenrepositorien<\/li>\n<li>Mit Substantiven benannt<\/li>\n<li>Nummerierung D1, D2, D3\u2026<\/li>\n<\/ul>\n<h3>Datenfl\u00fcsse<\/h3>\n<ul>\n<li>Zeigt die Bewegung von Daten<\/li>\n<li>Mit beschreibenden Beschriftungen benannt<\/li>\n<li>Die Richtung zeigt den Fluss an<\/li>\n<\/ul>\n<hr\/>\n<h2>5. Arbeitsbeispiele mit Graphviz<\/h2>\n<h3>Beispiel 1: Hotelverwaltungssystem (Logisches DFD)<\/h3>\n<p id=\"WGcAFhu\"><img alt=\"Logisches DFD f\u00fcr ein Hotelmanagementsystem, das Datenfl\u00fcsse zwischen G\u00e4sten, Mitarbeitern und Datenbanken zeigt.\" class=\"alignnone size-full wp-image-19312\" decoding=\"async\" height=\"873\" loading=\"lazy\" sizes=\"auto, (max-width: 1917px) 100vw, 1917px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc5d6c7cab.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc5d6c7cab.png 1917w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc5d6c7cab-300x137.png 300w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc5d6c7cab-1024x466.png 1024w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc5d6c7cab-768x350.png 768w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc5d6c7cab-1536x699.png 1536w\" width=\"1917\"\/><\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Graphviz<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Graphviz<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Graphviz<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Graphviz in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-graphviz\"><code class=\"language-graphviz\" data-language=\"graphviz\" class=\"language-graphviz\">digraph HotelMIS_DFD_Logical {\r\n    \/\/ --- GRAPH STYLE ---\r\n    graph [\r\n        rankdir = LR\r\n        splines = true\r\n        overlap = false\r\n        nodesep = 0.6\r\n        ranksep = 1.0\r\n        fontname = \"Helvetica,Arial,sans-serif\"\r\n        fontsize = 12\r\n    ]\r\n\r\n    \/\/ --- NODE STYLES ---\r\n    node [\r\n        fontname = \"Helvetica,Arial,sans-serif\"\r\n        fontsize = 11\r\n        penwidth = 1.5\r\n    ]\r\n\r\n    \/\/ External Entities\r\n    node [shape = box, style = \"filled\", fillcolor = \"#E1F5FE\", color = \"#0288D1\"] \r\n    Guest;\r\n    Staff;\r\n\r\n    \/\/ --- SYSTEM BOUNDARY ---\r\n    subgraph cluster_SystemBoundary {\r\n        label = \"Hotel MIS System Boundary\";\r\n        fontname = \"Helvetica,Arial,sans-serif\";\r\n        fontcolor = \"#757575\";\r\n        fontsize = 14;\r\n        color = \"#757575\";\r\n        style = \"dashed,rounded\";\r\n        bgcolor = \"#FAFAFA\";\r\n        margin = 20;\r\n\r\n        \/\/ Processes\r\n        node [shape = circle, style = \"filled\", fillcolor = \"#E8F5E9\", color = \"#388E3C\", fixedsize = true, width = 1.3]\r\n        P1 [label=\"1.0nManagenReservations\"];\r\n        P2 [label=\"2.0nCheck-In\/nOut\"];\r\n        P3 [label=\"3.0nManagenInventory\"];\r\n\r\n        \/\/ Data Stores\r\n        node [shape = record, style = \"filled\", fillcolor = \"#FFF9C4\", color = \"#FBC02D\", fixedsize = false]\r\n        ReservationsDS [label=\"{ &lt;id&gt; D1 | ReservationsnDatabase }\"];\r\n        RoomsDS        [label=\"{ &lt;id&gt; D2 | Room StatusnDatabase }\"];\r\n        InventoryDS    [label=\"{ &lt;id&gt; D3 | InventorynDatabase }\"];\n    }\r\n\r\n    \/\/ --- EDGE STYLES ---\r\n    edge [\r\n        fontname = \"Helvetica,Arial,sans-serif\"\r\n        fontsize = 9\r\n        color = \"#555555\"\r\n        arrowsize = 0.8\r\n    ]\r\n\r\n    \/\/ --- DATA FLOWS ---\r\n    \r\n    \/\/ Guest Interactions\r\n    Guest -&gt; P1 [label=\"Booking Request\"];\r\n    P1 -&gt; Guest [label=\"Confirmation\"];\r\n\r\n    Guest -&gt; P2 [label=\"Arrival\"];\r\n    P2 -&gt; Guest [label=\"Room Key\/Receipt\"];\r\n\r\n    \/\/ Staff Interactions\r\n    Staff -&gt; P3 [label=\"Update Inventory\"];\r\n    P3 -&gt; Staff [label=\"Alerts\/Reports\"];\r\n\r\n    \/\/ Process to Data Store\r\n    P1 -&gt; ReservationsDS [label=\"New Reservation\"];\r\n    ReservationsDS -&gt; P1 [label=\"Check Availability\"];\r\n    \r\n    P1 -&gt; RoomsDS [label=\"Room Details Request\"];\r\n    RoomsDS -&gt; P1 [label=\"Available Rooms\"];\r\n    \r\n    P2 -&gt; RoomsDS [label=\"Room Status Update\"];\r\n    RoomsDS -&gt; P2 [label=\"Room Information\"];\r\n    \r\n    P2 -&gt; P3 [label=\"Stay Details\"];\r\n    P3 -&gt; InventoryDS [label=\"Stock Update\"];\r\n    InventoryDS -&gt; P3 [label=\"Stock Levels\"];\n}<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#graphviz:eNqtVFtvGjsQfo\/U\/2DRV0hgKT1EaSsRdjeJSi6CVFVUocjsDmDF2BzbkHDS\/PeOd2HtXZJzUY95AGa+uX1zSdlM0eWcnEsD\/PJidB\/G4f1AzlhCOXl+d0DwHR2RRqNBzoa9m3Myur0bRPZ\/rsutf+R\/7FNUPKRMkc9kMHRSveRMgEapUStwcrkGxekS5VPKtacQMgUNVtE8\/Fj2notbh00nnkphBF0AymvnwNdgMP96TzHK65oK3dCg2LRWNtDsL2vQCnLx+N1Bqdyr6zDKqx25cm1afrW\/FbjlxEsQjyw186ywzn5C0ZMBJbAlkTDMMNB+OnpOl9bhRD7ViTYbnqUzZZxDWqsT+yORXNqe1N5HrbgTRyh2ombQ7Yat2pjkTs9WoM1J\/ntk6HR6UmFmdDe6jS7J6fW3q7A3vHPs6NUkn4eErzQmfD\/a4NfiVK5EStVmN0\/2cToBnrFmB4\/g5JEcTHbo2sl\/prli4Sr8o2M\/Vf2uDx88+d\/ZFNSmVM8hrSubKVLsQSYz5yDu2Y+vXVA1YwKVQbPgdMvrjZIJaL1r7H5zE6YSDv+iv924Ex2X+tvudqN2P0M+Qbqt2u5hnbiha49d5JsW+ZE16HMN10xcUkFnIIa4kGpNDZNC18ZeWTdBAQ8Q3p9D8tC4EEfiemXKwHYBbDu\/F2INwkjs+LjKSkgNxRmU6m1eFCRSpf\/MSxzHx\/0PJV7i034zCCu8ZHfI48KvOhwV+T+TTyz9QsIW+VmCCJvyhGogL6XSh1IurP32Vd0E1g1C7MKZ1ZteCqpyT1UvbfRSQMo+MhcvlUWOwrP9Ewfp7H87ccevLVYne54BVUo+bi2ah93Xz3HYu+2ReHD93Uu1AGQnC0vHm0OTrA\/eKSONL\/5En0r5wMQMu\/an1Rb8IgSBucUO25diytQia603nc6tm\/yeUmxNuXMX7LvLOvwVNkdDSIAtjecSi8hu7StF5HIbza3Pt2VKDZDy6mxXDJG5SZEaB2U0Bl1K\/C4H3d4dYqS3bD4hb8z\/FTz6qiJ+BV6mPrsMpLemDAWMM+PyLoXc7kqJthAMmum9tu3A5UjbGHgRMn01TPBmmHz\/SM7vq0GCssGFmEp\/QqpRvKah782ujkrD\/MV2cIlsVTLxgVXvFj6ANWTeD15+AaLCs7U=\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Graphviz in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<h3>Beispiel 2: Logisches DFD \u2013 Bibliotheksverwaltungssystem<\/h3>\n<p id=\"lnWBvyo\"><img alt=\"Logisches DFD f\u00fcr ein Bibliotheksmanagementsystem, das Prozesse, Datenspeicher und Datenfl\u00fcsse zeigt.\" class=\"alignnone size-full wp-image-19313\" decoding=\"async\" height=\"872\" loading=\"lazy\" sizes=\"auto, (max-width: 1916px) 100vw, 1916px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc609341c3.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc609341c3.png 1916w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc609341c3-300x137.png 300w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc609341c3-1024x466.png 1024w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc609341c3-768x350.png 768w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc609341c3-1536x699.png 1536w\" width=\"1916\"\/><\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Graphviz<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Graphviz<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Graphviz<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Graphviz in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-graphviz\"><code class=\"language-graphviz\" data-language=\"graphviz\" class=\"language-graphviz\">digraph LibrarySystem_Logical {\r\n    \/\/ --- GRAPH STYLE ---\r\n    graph [\r\n        rankdir = TB\r\n        splines = true\r\n        nodesep = 0.5\r\n        ranksep = 0.8\r\n        fontname = \"Helvetica,Arial,sans-serif\"\r\n        fontsize = 12\r\n    ]\r\n\r\n    \/\/ --- NODE STYLES ---\r\n    node [\r\n        fontname = \"Helvetica,Arial,sans-serif\"\r\n        fontsize = 11\r\n        penwidth = 1.5\r\n    ]\r\n\r\n    \/\/ External Entities\r\n    node [shape = box, style = \"filled\", fillcolor = \"#E1F5FE\", color = \"#0288D1\"]\r\n    Member;\r\n    Librarian;\r\n\r\n    \/\/ --- SYSTEM BOUNDARY ---\r\n    subgraph cluster_LibrarySystem {\r\n        label = \"Library System (Logical)\";\r\n        style = \"dashed,rounded\";\r\n        color = \"#757575\";\r\n        bgcolor = \"#FAFAFA\";\r\n        margin = 20;\r\n\r\n        \/\/ Processes\r\n        node [shape = circle, style = \"filled\", fillcolor = \"#E8F5E9\", color = \"#388E3C\", width = 1.4]\r\n        P1 [label=\"1.0nManagenCatalog\"];\r\n        P2 [label=\"2.0nProcessnBorrowing\"];\r\n        P3 [label=\"3.0nHandlenReturns\"];\r\n\r\n        \/\/ Data Stores\r\n        node [shape = record, style = \"filled\", fillcolor = \"#FFF9C4\", color = \"#FBC02D\"]\r\n        CatalogDS [label=\"{ &lt;id&gt; D1 | BooknCatalog }\"];\r\n        TransactionsDS [label=\"{ &lt;id&gt; D2 | BorrowingnRecords }\"];\r\n        MemberDS [label=\"{ &lt;id&gt; D3 | MembernDatabase }\"];\n    }\r\n\r\n    \/\/ --- EDGE STYLES ---\r\n    edge [\r\n        fontname = \"Helvetica,Arial,sans-serif\"\r\n        fontsize = 9\r\n        color = \"#555555\"\r\n        arrowsize = 0.8\r\n    ]\r\n\r\n    \/\/ --- DATA FLOWS ---\r\n    \r\n    \/\/ Member Interactions\r\n    Member -&gt; P1 [label=\"Search Books\"];\r\n    P1 -&gt; Member [label=\"Search Results\"];\r\n    \r\n    Member -&gt; P2 [label=\"Borrow Request\"];\r\n    P2 -&gt; Member [label=\"Borrow Confirmation\"];\r\n    \r\n    Member -&gt; P3 [label=\"Return Books\"];\r\n    P3 -&gt; Member [label=\"Return Receipt\"];\r\n\r\n    \/\/ Librarian Interactions\r\n    Librarian -&gt; P1 [label=\"Add\/Update Books\"];\r\n    P1 -&gt; Librarian [label=\"Catalog Update Confirmation\"];\r\n    \r\n    Librarian -&gt; P3 [label=\"Process Overdue\"];\r\n    P3 -&gt; Librarian [label=\"Overdue Report\"];\r\n\r\n    \/\/ Data Flows\r\n    P1 -&gt; CatalogDS [label=\"Book Updates\"];\r\n    CatalogDS -&gt; P1 [label=\"Catalog Data\"];\r\n    \r\n    P2 -&gt; CatalogDS [label=\"Check Availability\"];\r\n    CatalogDS -&gt; P2 [label=\"Book Status\"];\r\n    \r\n    P2 -&gt; MemberDS [label=\"Check Member Status\"];\r\n    MemberDS -&gt; P2 [label=\"Member Info\"];\r\n    \r\n    P2 -&gt; TransactionsDS [label=\"Create Borrow Record\"];\r\n    TransactionsDS -&gt; P2 [label=\"Borrowing History\"];\r\n    \r\n    P3 -&gt; TransactionsDS [label=\"Update Return\"];\r\n    TransactionsDS -&gt; P3 [label=\"Borrow Records\"];\r\n    \r\n    P3 -&gt; MemberDS [label=\"Update Member Status\"];\r\n    MemberDS -&gt; P3 [label=\"Member Info\"];\n}<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Graphviz in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<h3>Beispiel 3: Physisches DFD \u2013 Bibliotheksverwaltungssystem<\/h3>\n<p id=\"VUZUuAT\"><img alt=\"Physisches DFD f\u00fcr ein Bibliotheksmanagementsystem, das Datenfl\u00fcsse f\u00fcr Webkatalog, Ausleih-API und R\u00fcckgabeverarbeiter zeigt.\" class=\"alignnone size-full wp-image-19314\" decoding=\"async\" height=\"1228\" loading=\"lazy\" sizes=\"auto, (max-width: 1091px) 100vw, 1091px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc62dd2afa.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc62dd2afa.png 1091w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc62dd2afa-267x300.png 267w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc62dd2afa-910x1024.png 910w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc62dd2afa-768x864.png 768w\" width=\"1091\"\/><\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Graphviz<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Graphviz<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Graphviz<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Graphviz in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-graphviz\"><code class=\"language-graphviz\" data-language=\"graphviz\" class=\"language-graphviz\">digraph LibrarySystem_Physical {\r\n    \/\/ --- GRAPH STYLE ---\r\n    graph [\r\n        rankdir = TB\r\n        splines = true\r\n        nodesep = 0.5\r\n        ranksep = 0.8\r\n        fontname = \"Helvetica,Arial,sans-serif\"\r\n        fontsize = 12\r\n    ]\r\n\r\n    \/\/ --- NODE STYLES ---\r\n    node [\r\n        fontname = \"Helvetica,Arial,sans-serif\"\r\n        fontsize = 11\r\n        penwidth = 1.5\r\n    ]\r\n\r\n    \/\/ External Entities (Physical)\r\n    node [shape = box, style = \"filled\", fillcolor = \"#E1F5FE\", color = \"#0288D1\"]\r\n    \"Library Member\" [label=\"LibrarynMember\"];\r\n    \"Librarian\" [label=\"LibrariannStaff\"];\r\n    \"Email System\" [label=\"EmailnSystem\"];\r\n    \"Payment Gateway\" [label=\"PaymentnGateway\"];\r\n\r\n    \/\/ --- SYSTEM BOUNDARY ---\r\n    subgraph cluster_LibrarySystem_Physical {\r\n        label = \"Library Management System (Physical Implementation)\";\r\n        style = \"dashed,rounded\";\r\n        color = \"#757575\";\r\n        bgcolor = \"#FAFAFA\";\r\n        margin = 20;\r\n\r\n        \/\/ Physical Processes (with technology details)\r\n        node [shape = circle, style = \"filled\", fillcolor = \"#E8F5E9\", color = \"#388E3C\", width = 1.4]\r\n        P1 [label=\"1.0nWeb Catalogn(HTML, JS)\"];\r\n        P2 [label=\"2.0nBorrowingnAPIn(Python\/REST)\"];\r\n        P3 [label=\"3.0nReturnnProcessorn(Java)\"];\r\n\r\n        \/\/ Physical Data Stores (with technology details)\r\n        node [shape = record, style = \"filled\", fillcolor = \"#FFF9C4\", color = \"#FBC02D\"]\r\n        CatalogDS [label=\"{ &lt;id&gt; D1 | PostgreSQLnBook Catalog }\"];\r\n        TransactionsDS [label=\"{ &lt;id&gt; D2 | MongoDBnBorrow Records }\"];\r\n        MemberDS [label=\"{ &lt;id&gt; D3 | OraclenMember DB }\"];\r\n        \r\n        \/\/ Additional physical components\r\n        node [shape = box, style = \"filled\", fillcolor = \"#F3E5F5\", color = \"#8E24AA\"]\r\n        \"Cache Server\" [label=\"RedisnCache\"];\r\n        \"Message Queue\" [label=\"RabbitMQnQueue\"];\n    }\r\n\r\n    \/\/ --- EDGE STYLES ---\r\n    edge [\r\n        fontname = \"Helvetica,Arial,sans-serif\"\r\n        fontsize = 9\r\n        color = \"#555555\"\r\n        arrowsize = 0.8\r\n    ]\r\n\r\n    \/\/ --- DATA FLOWS (Physical) ---\r\n    \r\n    \/\/ Physical Member Interactions\r\n    \"Library Member\" -&gt; P1 [label=\"HTTP GETnBook Search\"];\r\n    P1 -&gt; \"Library Member\" [label=\"HTML\/JSONnResults\"];\r\n    \r\n    \"Library Member\" -&gt; P2 [label=\"REST APInBorrow Request\"];\r\n    P2 -&gt; \"Library Member\" [label=\"JSONnConfirmation\"];\r\n    \r\n    \"Library Member\" -&gt; P3 [label=\"REST APInReturn\"];\r\n    P3 -&gt; \"Library Member\" [label=\"JSONnReceipt\"];\r\n\r\n    \/\/ Physical Librarian Interactions\r\n    \"Librarian\" -&gt; P1 [label=\"HTTPSnCatalog Mgmt\"];\r\n    P1 -&gt; \"Librarian\" [label=\"HTMLnConfirmation\"];\r\n    \r\n    \"Librarian\" -&gt; P3 [label=\"REST APInOverdue Process\"];\r\n    P3 -&gt; \"Librarian\" [label=\"PDF Report\"];\r\n\r\n    \/\/ External System Interactions\r\n    P2 -&gt; \"Email System\" [label=\"SMTPnNotification\"];\r\n    P3 -&gt; \"Payment Gateway\" [label=\"HTTPSnFine Payment\"];\r\n\r\n    \/\/ Data Flows (Physical)\r\n    P1 -&gt; CatalogDS [label=\"SQL UPDATE\"];\r\n    CatalogDS -&gt; P1 [label=\"SQL SELECT\"];\r\n    \r\n    P1 -&gt; \"Cache Server\" [label=\"Cache Update\"];\r\n    \"Cache Server\" -&gt; P1 [label=\"Cache Hit\"];\r\n    \r\n    P2 -&gt; CatalogDS [label=\"SQL SELECT\"];\r\n    CatalogDS -&gt; P2 [label=\"SQL RESULT\"];\r\n    \r\n    P2 -&gt; MemberDS [label=\"SQL SELECT\"];\r\n    MemberDS -&gt; P2 [label=\"SQL RESULT\"];\r\n    \r\n    P2 -&gt; TransactionsDS [label=\"INSERT\"];\r\n    TransactionsDS -&gt; P2 [label=\"SELECT\"];\r\n    \r\n    P2 -&gt; \"Message Queue\" [label=\"PublishnBorrow Event\"];\r\n    \r\n    P3 -&gt; TransactionsDS [label=\"UPDATE\"];\r\n    TransactionsDS -&gt; P3 [label=\"SELECT\"];\r\n    \r\n    P3 -&gt; MemberDS [label=\"UPDATE\"];\r\n    MemberDS -&gt; P3 [label=\"SELECT\"];\r\n    \r\n    P3 -&gt; \"Message Queue\" [label=\"PublishnReturn Event\"];\n}<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Graphviz in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<h3>Beispiel 4: E-Commerce-Bestellabwicklung (logisches DFD)<\/h3>\n<p id=\"BWPdcdI\"><img alt=\"Logisches DFD f\u00fcr die Bestellabwicklung im E-Commerce, das Datenfl\u00fcsse zwischen Kunde, Lieferant, Zahlungsabwickler und internen Prozessen zeigt.\" class=\"alignnone size-full wp-image-19315\" decoding=\"async\" height=\"741\" loading=\"lazy\" sizes=\"auto, (max-width: 1073px) 100vw, 1073px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc64c9d4de.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc64c9d4de.png 1073w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc64c9d4de-300x207.png 300w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc64c9d4de-1024x707.png 1024w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc64c9d4de-768x530.png 768w\" width=\"1073\"\/><\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Graphviz<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Graphviz<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Graphviz<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Graphviz in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-graphviz\"><code class=\"language-graphviz\" data-language=\"graphviz\" class=\"language-graphviz\">digraph ECommerce_Logical {\r\n    \/\/ --- GRAPHSTIL ---\r\n    graph [\r\n        rankdir = LR\r\n        splines = true\r\n        nodesep = 0.5\r\n        ranksep = 0.8\r\n        fontname = \"Helvetica,Arial,sans-serif\"\r\n        fontsize = 12\r\n    ]\r\n\r\n    \/\/ --- KNOTENSTILE ---\r\n    node [\r\n        fontname = \"Helvetica,Arial,sans-serif\"\r\n        fontsize = 11\r\n        penwidth = 1.5\r\n    ]\r\n\r\n    \/\/ Externe Entit\u00e4ten\r\n    node [shape = box, style = \"filled\", fillcolor = \"#E1F5FE\", color = \"#0288D1\"]\r\n    Kunde;\r\n    Lieferant;\r\n    \"Zahlungsabwickler\" [label=\"Zahlungsnabwickler\"];\r\n\r\n    \/\/ --- SYSTEMGRENZE ---\r\n    subgraph cluster_ECommerce {\r\n        label = \"E-Commerce-System (logisch)\";\r\n        style = \"dashed,rounded\";\r\n        color = \"#757575\";\r\n        bgcolor = \"#FAFAFA\";\r\n        margin = 20;\r\n\r\n        \/\/ Prozesse\r\n        node [shape = circle, style = \"filled\", fillcolor = \"#E8F5E9\", color = \"#388E3C\", width = 1.4]\r\n        P1 [label=\"1.0nBestellungnverarbeiten\"];\r\n        P2 [label=\"2.0nLagerbestandnverwalten\"];\r\n        P3 [label=\"3.0nVersandnbearbeiten\"];\r\n\r\n        \/\/ Datenspeicher\r\n        node [shape = record, style = \"filled\", fillcolor = \"#FFF9C4\", color = \"#FBC02D\"]\r\n        OrderDS [label=\"{ &lt;id&gt; D1 | Bestellungen }\"];\r\n        InventoryDS [label=\"{ &lt;id&gt; D2 | Lagerbestand }\"];\r\n        ShipmentDS [label=\"{ &lt;id&gt; D3 | Sendungen }\"];\r\n    }\r\n\r\n    \/\/ --- KANTENSTILE ---\r\n    edge [\r\n        fontname = \"Helvetica,Arial,sans-serif\"\r\n        fontsize = 9\r\n        color = \"#555555\"\r\n        arrowsize = 0.8\r\n    ]\r\n\r\n    \/\/ --- DATENFLOWS ---\r\n    \r\n    \/\/ Kundeninteraktionen\r\n    Kunde -&gt; P1 [label=\"Bestelldetails\"];\r\n    P1 -&gt; Kunde [label=\"Bestellbest\u00e4tigung\"];\r\n    \r\n    Kunde -&gt; P3 [label=\"Bestellung verfolgen\"];\r\n    P3 -&gt; Kunde [label=\"Verfolgungsinformationen\"];\r\n\r\n    \/\/ Zahlungsabwickler\r\n    \"Zahlungsabwickler\" -&gt; P1 [label=\"Zahlungsantwort\"];\r\n    P1 -&gt; \"Zahlungsabwickler\" [label=\"Zahlungsanfrage\"];\r\n\r\n    \/\/ Lieferant\r\n    Lieferant -&gt; P2 [label=\"Lageraktualisierung\"];\r\n    P2 -&gt; Lieferant [label=\"Nachbestellanfrage\"];\r\n\r\n    \/\/ Prozessdatenfl\u00fcsse\r\n    P1 -&gt; OrderDS [label=\"Bestellung speichern\"];\r\n    OrderDS -&gt; P1 [label=\"Bestellhistorie\"];\r\n    \r\n    P1 -&gt; InventoryDS [label=\"Lagerbestand pr\u00fcfen\"];\r\n    InventoryDS -&gt; P1 [label=\"Verf\u00fcgbarkeit\"];\r\n    \r\n    P1 -&gt; P3 [label=\"Versanddetails\"];\r\n    \r\n    P2 -&gt; InventoryDS [label=\"Lagerbestand aktualisieren\"];\r\n    InventoryDS -&gt; P2 [label=\"Aktueller Lagerbestand\"];\r\n    \r\n    P3 -&gt; OrderDS [label=\"Status aktualisieren\"];\r\n    OrderDS -&gt; P3 [label=\"Bestellinformationen\"];\r\n    \r\n    P3 -&gt; ShipmentDS [label=\"Sendung erstellen\"];\r\n    ShipmentDS -&gt; P3 [label=\"Sendungsdetails\"];\r\n}\r\n<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Graphviz in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz:eNqtVG1v0zAQ\/j5p\/8EKX0BqWV9W0WkwqcsLRdqbmk1oYhNyE7e1ltrBdgdj7L9zThrHzoKYBOmX+u453z3PnS+lS4HzFQp9vl4TkZCvJ3xJE5yhx90dBN\/eHup2u+jjbHIxRfHl9Umoz6WvDP1SHvQnMLtLqUAf0Mmstso8o4xIsCqxIbWd8ZRIkoO993bkXlKZx7V5wZlieE3A7k1Jdk8UlNmZCIqzjsRMdiURdOG5AZL+1AH9QWm+3d1xWJ2dB2FJKq5Z6bJsUv+UuF+bc8K+01SttLniaxcU\/lBEMFA+ZIoqSqRdjlzhXF845z86SKqHrChnQbOMpF4H6T8Jz7iW3nsV9qNRFIK5NvUG43HQ927LO\/2NVBzafVge400OLTJH7wI\/rAlT6ELwhEjJhYe+ZHhOsg+V64bVvtvDhqrxdXwZnqLj86uzYDK7rpWVm3k5MkkGBRDx1UxdNW36KzLposOucccPgF+j19vhfOMdWuNVqZFiuSJpR\/ANS0EVC1Lr8G6kf7Zvvqy90UT\/bO8aiyVl4Bz0DM0t1a0CVZ+e9yqhIsnIC9o1jkbhgdOu4XgcDn0w1ROzf1vnueibhvTf9kwzbti5SEnZEQMdGOhAQ08xw0tywz6xe+gjFw8uemjQQ42eYpZmgI5XNNd9t5q9VSHACqMYLvqzDoIkXKR\/1yGKogN\/39EhOvZ7g8CzqBcMg9iU+Yje0\/QIBX30q\/RJ9ORQMkRbggYQZPyNuIpyS9gQwiq3ne6p8RDC4OPz9ULS5X9bLwdtIz4qPisAC8G\/byPMSm2uwmByOUHRyflnq1QDqPYFiAXPFieKcibdVYK6R\/ZYFq1AAVGYZtIIBACAmRAX7HO2oGKN9eUmoiVJPaKXUModcmce3G0pCihlS2Cw4O7Kerbt\/rwFXY4VYEZkDnqQBs0XrFEI\/bYhUrkFVevYXc5F8voxw5MD7ld5ipWVeKBRJqLCzggvFG7Ntq2ufMhRBpNik2g+txjfk4biFaRtAKZUOjvGvrrtYforAqwKbibGxrk5JvcwXXhOM6raU1izUr3XZzNpK9dWUinxX2qq++JvhNBpXLw9m01JTQKsNrJV1WFDVTPDzatbdpYvSHG7vcAb6+0FQj39Bul6yvg=\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#graphviz: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Graphviz in VPasCode bearbeiten<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<hr\/>\n<h2>6. Best Practices<\/h2>\n<h3>F\u00fcr logische DFDs<\/h3>\n<ol>\n<li><strong>Konzentrieren Sie sich auf Gesch\u00e4ftsprozesse<\/strong>, nicht auf Technologie<\/li>\n<li><strong>Verwenden Sie Gesch\u00e4ftsterminologie<\/strong>die Stakeholder verstehen<\/li>\n<li><strong>Halten Sie Prozesse auf konsistenten Abstraktionsebenen<\/strong><\/li>\n<li><strong>Validieren Sie mit Benutzern aus dem Gesch\u00e4ftsbereich<\/strong>f\u00fcr Genauigkeit<\/li>\n<li><strong>Zeigen Sie alle wichtigen Datenfl\u00fcsse<\/strong>zwischen den Komponenten<\/li>\n<\/ol>\n<h3>F\u00fcr physische DFDs<\/h3>\n<ol>\n<li><strong>Enthalten Sie technologie-spezifische Details<\/strong><\/li>\n<li><strong>Ber\u00fccksichtigen Sie Leistung und Skalierbarkeit<\/strong><\/li>\n<li><strong>Dokumentieren Sie System-Schnittstellen<\/strong>klar<\/li>\n<li><strong>Enthalten Sie Fehlerbehandlung<\/strong>und Wiederherstellungsprozesse<\/li>\n<li><strong>Richten Sie sich an der tats\u00e4chlichen Systemarchitektur aus<\/strong><\/li>\n<\/ol>\n<h3>Allgemeine Best Practices<\/h3>\n<ol>\n<li><strong>Beginnen Sie mit einem Kontextdiagramm<\/strong><\/li>\n<li><strong>Nummerieren Sie Prozesse hierarchisch<\/strong><\/li>\n<li><strong>Verwenden Sie aussagekr\u00e4ftige Bezeichnungen<\/strong> f\u00fcr alle Komponenten<\/li>\n<li><strong>Vermeiden Sie sich kreuzende Datenfl\u00fcsse<\/strong><\/li>\n<li><strong>Validieren Sie regelm\u00e4\u00dfig mit den Beteiligten<\/strong><\/li>\n<\/ol>\n<hr\/>\n<h2>7. H\u00e4ufige Fallstricke<\/h2>\n<p id=\"reikZmW\"><img alt=\"7 h\u00e4ufige Fallstricke bei DFDs\" class=\"alignnone wp-image-19321 size-full\" decoding=\"async\" height=\"559\" loading=\"lazy\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc87f32d08.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc87f32d08.png 1024w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc87f32d08-300x164.png 300w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/07\/img_6a4dc87f32d08-768x419.png 768w\" width=\"1024\"\/><\/p>\n<h3>Fallstrick 1: Vermischung von logischen und physischen Aspekten<\/h3>\n<p>\u274c\u00a0<strong>Falsch:<\/strong> Hinzuf\u00fcgen von Datenbanktechnologienamen in einem logischen DFD<br \/>\n\u2705\u00a0<strong>Richtig:<\/strong> Halten Sie das logische DFD technologieunabh\u00e4ngig<\/p>\n<h3>Fallstrick 2: Fehlende Datenfl\u00fcsse<\/h3>\n<p>\u274c\u00a0<strong>Falsch:<\/strong> Darstellung nur einer Richtung zwischen Entit\u00e4ten<br \/>\n\u2705\u00a0<strong>Richtig:<\/strong> Einbeziehen von bidirektionalen Fl\u00fcssen, wo angemessen<\/p>\n<h3>Fallstrick 3: Zu komplex<\/h3>\n<p>\u274c\u00a0<strong>Falsch:<\/strong> Platzieren von 20+ Prozessen in einem Diagramm<br \/>\n\u2705\u00a0<strong>Richtig:<\/strong> Zerlegen in mehrere, fokussierte Diagramme<\/p>\n<h3>Fallstrick 4: Falsche Beschriftung von Datenfl\u00fcssen<\/h3>\n<p>\u274c\u00a0<strong>Falsch:<\/strong> \u201eDaten\u201c als Bezeichnung<br \/>\n\u2705\u00a0<strong>Richtig:<\/strong> Beschreibende Bezeichnungen wie \u201eKundenbestelldetails\u201c<\/p>\n<h3>Falle 5: Falsche Prozessgrenzen<\/h3>\n<p>\u274c\u00a0<strong>Falsch:<\/strong> Ein Prozess, der mehrere nicht zusammenh\u00e4ngende Funktionen ausf\u00fchrt<br \/>\n\u2705\u00a0<strong>Richtig:<\/strong> Getrennte Prozesse f\u00fcr unterschiedliche Funktionen<\/p>\n<hr\/>\n<h2>Fazit<\/h2>\n<p>Datenflussdiagramme sind wesentliche Werkzeuge f\u00fcr die Systemanalyse und -gestaltung. Das Verst\u00e4ndnis des Unterschieds zwischen logischen und physischen DFDs hilft Ihnen, mit verschiedenen Interessengruppen in unterschiedlichen Phasen des Softwareentwicklungslebenszyklus effektiv zu kommunizieren.<\/p>\n<ul>\n<li><strong>Logische DFDs<\/strong> verbinden gesch\u00e4ftliche Anforderungen und technische L\u00f6sungen<\/li>\n<li><strong>Physische DFDs<\/strong> leiten Implementierungs- und Bereitstellungsentscheidungen<\/li>\n<\/ul>\n<p>Verwenden Sie die bereitgestellten Beispiele als Vorlagen f\u00fcr Ihre eigenen DFDs, passen Sie sie an Ihre spezifischen Systemanforderungen an und befolgen Sie dabei die oben genannten Best Practices.<\/p>\n<hr\/>\n<h2>Zus\u00e4tzliche Ressourcen<\/h2>\n<ol>\n<li><a href=\"https:\/\/guides.visual-paradigm.com\/ai-gane-and-sarson-dfd-generator-by-visual-paradigm\/#content\"><strong>KI-Gane-und-Sarson-DFD-Generator von Visual Paradigm<\/strong><\/a>: Erkl\u00e4rt, wie die KI-Tools von Visual Paradigm Gane-Sarson-DFDs aus Textbeschreibungen generieren k\u00f6nnen.<\/li>\n<li><a href=\"https:\/\/guides.visual-paradigm.com\/cn\/a-step-by-step-guide-to-creating-data-flow-diagrams-with-visual-paradigm\/\"><strong>Eine Schritt-f\u00fcr-Schritt-Anleitung zur Erstellung von Datenflussdiagrammen mit Visual Paradigm<\/strong><\/a>: Bietet ein Tutorial zur Erstellung von DFDs mit dem Online-Tool von Visual Paradigm, von der Registrierung bis zum Teilen.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/how-to-create-data-flow-diagram\"><strong>Wie erstellt man ein Datenflussdiagramm (DFD)?<\/strong><\/a>: Ein Leitfaden, der erkl\u00e4rt, was ein DFD ist, wozu es dient und welche Haupttypen es gibt (physisch und logisch).<\/li>\n<li><a href=\"https:\/\/blog.visual-paradigm.com\/fa\/beginners-guide-to-ssadm-dfd-diagrams-with-visual-paradigm-online\/\"><strong>Einsteigerleitfaden zu SSADM-DFD-Diagrammen mit Visual Paradigm Online<\/strong><\/a>: Ein Einf\u00fchrungsguide zur Erstellung von Datenflussdiagrammen im SSADM-Stil mit Visual Paradigm Online.<\/li>\n<li><a href=\"https:\/\/guides.visual-paradigm.com\/tw\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/#content\"><strong>Umfassender Leitfaden zu Datenflussdiagrammen (DFD): Entmystifizierung des Informationsflusses<\/strong><\/a>: Ein \u00dcberblick \u00fcber DFDs, der ihre Elemente detailliert beschreibt und erkl\u00e4rt, warum Visual Paradigm ein geeignetes Werkzeug f\u00fcr deren Erstellung ist.<\/li>\n<li><a href=\"https:\/\/guides.visual-paradigm.com\/cn\/mastering-data-flow-diagrams-with-visual-paradigm-a-step-by-step-guide\/#content\"><strong>Beherrschung von Datenflussdiagrammen mit Visual Paradigm: Ein Schritt-f\u00fcr-Schritt-Leitfaden<\/strong><\/a>: Ein praxisorientierter Leitfaden, der Beispiele und Vorlagen verwendet, um die Erstellung von DFDs zu vermitteln, mit Fallstudien wie Online-Shopsystemen.<\/li>\n<li><a href=\"https:\/\/guides.visual-paradigm.com\/tw\/understanding-logical-dfd-vs-physical-dfd-when-and-why-we-need-them\/#respond\"><strong>Verstehen von logischen DFDs im Vergleich zu physischen DFDs: Wann und warum wir sie ben\u00f6tigen<\/strong><\/a>: Erkl\u00e4rt die Unterschiede, Zwecke und geeigneten Anwendungsf\u00e4lle f\u00fcr logische und physische Datenflussdiagramme.<\/li>\n<li><a href=\"https:\/\/blog.visual-paradigm.com\/fa\/beginners-guide-to-data-flow-diagrams-dfd-with-visual-paradigm-online\/#chgwngy_ayjad_yk_dyagram_jryan_dadh_ba_Visual_Paradigm_Online\"><strong>Einsteigerleitfaden f\u00fcr Datenflussdiagramme (DFD) mit Visual Paradigm Online<\/strong><\/a>: Ein einsteigerfreundliches Tutorial, das die Schritte zur Erstellung eines DFD mit Visual Paradigm Online erkl\u00e4rt.<\/li>\n<li><a href=\"https:\/\/guides.visual-paradigm.com\/category\/dfd\/\"><strong>DFD-Archiv \u2013 Visual Paradigm-Leitf\u00e4den<\/strong><\/a>: Eine Sammlung von Artikeln zu DFD-Themen, einschlie\u00dflich KI-Generatoren, Validierung, Ausgewogenheit und Ebenen.<\/li>\n<li><a href=\"https:\/\/blog.visual-paradigm.com\/cn\/beginners-guide-to-data-flow-diagrams-dfd-with-visual-paradigm-online\/#bu_zhou_6_bao_cun_yu_xiang\"><strong>Erste Schritte Leitfaden f\u00fcr Datenflussdiagramme (DFD) mit Visual Paradigm Online<\/strong><\/a>: Beschreibt detailliert den schrittweisen Prozess zur Erstellung von DFDs, einschlie\u00dflich der wichtigsten Komponenten und der Verwendung von Vorlagen.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/#dfd\"><strong>Erstellen Sie DFDs mit dem besten DFD-Tool<\/strong><\/a>: Diskutiert die grafische Darstellung von Datenfl\u00fcssen, erl\u00e4utert die Unterschiede zwischen logischen und physischen DFDs und untersucht die Vorteile jeder Art.<\/li>\n<li>\n<p class=\"\"><a href=\"https:\/\/blog.visual-paradigm.com\/id\/beginners-guide-to-data-flow-diagrams-dfd-with-visual-paradigm-online\/\"><strong>Einsteigerleitfaden f\u00fcr Datenflussdiagramme (DFD) mit Visual Paradigm Online<\/strong><\/a>: Ein einsteigerfreundlicher Leitfaden auf Indonesisch zu DFDs, der Komponenten und den schrittweisen Erstellungsprozess in Visual Paradigm Online darlegt.<\/p>\n<\/li>\n<\/ol>\n<hr\/>\n<p class=\"\"><em>Dieser Leitfaden bietet eine Grundlage f\u00fcr die Erstellung effektiver DFDs. Denken Sie daran, dass gute Diagramme durch Iteration und Feedback der Beteiligten entstehen.<\/em><em><br \/>\n<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. Einf\u00fchrung in Datenflussdiagramme Ein Datenflussdiagramm (DFD) ist eine grafische Darstellung, wie Daten durch ein Informationssystem flie\u00dfen. 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