{"id":11072,"date":"2024-11-27T11:36:50","date_gmt":"2024-11-27T03:36:50","guid":{"rendered":"https:\/\/www.cybermedian.com\/fr\/use-case-tutorial-understanding-key-concepts-and-business-use-cases\/"},"modified":"2026-04-20T09:04:30","modified_gmt":"2026-04-20T09:04:30","slug":"use-case-tutorial-understanding-key-concepts-and-business-use-cases","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/fr\/use-case-tutorial-understanding-key-concepts-and-business-use-cases\/","title":{"rendered":"Tutoriel sur les cas d&#8217;utilisation : Comprendre les concepts cl\u00e9s et les cas d&#8217;utilisation commerciaux"},"content":{"rendered":"<h2>Introduction<\/h2>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-use-case-diagram\/\">Cas d&#8217;utilisation<\/a>sont un outil fondamental dans le d\u00e9veloppement logiciel et l&#8217;ing\u00e9nierie des syst\u00e8mes, offrant une m\u00e9thode structur\u00e9e pour capturer les exigences fonctionnelles d&#8217;un syst\u00e8me du point de vue de ses utilisateurs. Ce tutoriel expliquera les concepts cl\u00e9s des cas d&#8217;utilisation, en se concentrant sur les cas d&#8217;utilisation commerciaux, et utilisera l&#8217;exemple fourni pour illustrer ces concepts.<\/p>\n<p><img alt=\"PlantUML Diagram\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2024\/11\/img_674694c85a7e3.png\"\/><\/p>\n<h2>Concepts cl\u00e9s dans les cas d&#8217;utilisation<\/h2>\n<h3>1.\u00a0<strong>Acteurs<\/strong><\/h3>\n<p>Les acteurs repr\u00e9sentent toute entit\u00e9 qui interagit avec le syst\u00e8me. Ils peuvent \u00eatre des humains, d&#8217;autres syst\u00e8mes ou des entit\u00e9s externes. Dans l&#8217;exemple fourni, les acteurs sont :<\/p>\n<ul>\n<li><strong>Guide touristique<\/strong>: Un acteur commercial associ\u00e9 \u00e0 l&#8217;a\u00e9roport.<\/li>\n<li><strong>Passager<\/strong>: Un acteur commercial qui est l&#8217;utilisateur principal des services de l&#8217;a\u00e9roport.<\/li>\n<\/ul>\n<h3>2.\u00a0<strong>Cas d&#8217;utilisation<\/strong><\/h3>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/use-case-diagram-software\/\">Cas d&#8217;utilisation<\/a>d\u00e9crivent les interactions entre les acteurs et le syst\u00e8me afin d&#8217;atteindre des objectifs sp\u00e9cifiques. Ils sont repr\u00e9sent\u00e9s par des ovales dans les diagrammes de cas d&#8217;utilisation. Dans l&#8217;exemple :<\/p>\n<ul>\n<li><strong>Enregistrement de groupe<\/strong><\/li>\n<li><strong>Enregistrement individuel<\/strong><\/li>\n<li><strong>Enregistrement des bagages<\/strong><\/li>\n<li><strong>Contr\u00f4le de s\u00e9curit\u00e9<\/strong><\/li>\n<\/ul>\n<h3>3.\u00a0<strong>Relations<\/strong><\/h3>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/VPGallery\/diagrams\/UseCase.html\">Cas d&#8217;utilisation<\/a>peuvent avoir diverses relations entre elles :<\/p>\n<ul>\n<li><strong>Inclure<\/strong>: Un cas d&#8217;utilisation inclut le comportement d&#8217;un autre cas d&#8217;utilisation.<\/li>\n<li><strong>\u00c9tendre<\/strong>: Un cas d&#8217;utilisation \u00e9tend le comportement d&#8217;un autre cas d&#8217;utilisation sous certaines conditions.<\/li>\n<li><strong>G\u00e9n\u00e9ralisation<\/strong>: Une relation de g\u00e9n\u00e9ralisation entre les acteurs indique qu&#8217;un acteur est une version sp\u00e9cialis\u00e9e d&#8217;un autre.<\/li>\n<li><strong>Association<\/strong>: Une relation directe entre un acteur et un cas d&#8217;utilisation.<\/li>\n<\/ul>\n<h3>4.\u00a0<strong>Cas d&#8217;utilisation m\u00e9tier<\/strong><\/h3>\n<p>Les cas d&#8217;utilisation m\u00e9tier se concentrent sur les objectifs et les interactions dans un contexte m\u00e9tier. Ils d\u00e9crivent comment l&#8217;entreprise fonctionne et interagit avec son environnement. Dans l&#8217;exemple, tous les cas d&#8217;utilisation sont des cas d&#8217;utilisation m\u00e9tier dans le contexte d&#8217;un a\u00e9roport.<\/p>\n<h3>5.\u00a0<strong>Sujet\/Fronti\u00e8re m\u00e9tier<\/strong><\/h3>\n<p>Le sujet ou la fronti\u00e8re m\u00e9tier d\u00e9finit le p\u00e9rim\u00e8tre du syst\u00e8me mod\u00e9lis\u00e9. Dans l&#8217;exemple, la fronti\u00e8re m\u00e9tier est l&#8217;\u00ab a\u00e9roport \u00bb.<\/p>\n<h2>Explication de l&#8217;exemple<\/h2>\n<h3>Acteurs<\/h3>\n<ul>\n<li><strong>Guide touristique<\/strong>: Associ\u00e9 \u00e0 l&#8217;a\u00e9roport et peut interagir avec le syst\u00e8me au nom d&#8217;un groupe de passagers.<\/li>\n<li><strong>Passager<\/strong>: L&#8217;utilisateur principal des services de l&#8217;a\u00e9roport, interagissant directement avec divers cas d&#8217;utilisation.<\/li>\n<\/ul>\n<h3>Cas d&#8217;utilisation<\/h3>\n<ul>\n<li><strong>Enregistrement de groupe<\/strong>: Un cas d&#8217;utilisation o\u00f9 un guide touristique enregistre un groupe de passagers.<\/li>\n<li><strong>Enregistrement individuel<\/strong>: Un cas d&#8217;utilisation o\u00f9 un passager unique s&#8217;inscrit.<\/li>\n<li><strong>Enregistrement des bagages<\/strong>: Un cas d&#8217;utilisation o\u00f9 les passagers enregistrent leurs bagages.<\/li>\n<li><strong>Contr\u00f4le de s\u00e9curit\u00e9<\/strong>: Un cas d&#8217;utilisation o\u00f9 les passagers passent par un contr\u00f4le de s\u00e9curit\u00e9.<\/li>\n<\/ul>\n<h3>Relations<\/h3>\n<ul>\n<li><strong>Relation d&#8217;inclusion<\/strong>: Le cas d&#8217;utilisation \u00ab Enregistrement de groupe \u00bb inclut le cas d&#8217;utilisation \u00ab Enregistrement individuel \u00bb, ce qui signifie que le comportement de l&#8217;enregistrement individuel fait partie du processus d&#8217;enregistrement de groupe.<\/li>\n<li><strong>Relation d&#8217;extension<\/strong>: Le cas d&#8217;utilisation \u00ab Enregistrement des bagages \u00bb \u00e9tend le cas d&#8217;utilisation \u00ab Enregistrement individuel \u00bb, ce qui signifie que l&#8217;enregistrement des bagages est une \u00e9tape suppl\u00e9mentaire qui peut avoir lieu pendant l&#8217;enregistrement individuel.<\/li>\n<li><strong>G\u00e9n\u00e9ralisation<\/strong>: L&#8217;acteur \u00ab Passager \u00bb est une g\u00e9n\u00e9ralisation d&#8217;autres types sp\u00e9cifiques de passagers (non explicitement montr\u00e9s sur ce diagramme mais sous-entendus).<\/li>\n<li><strong>Association<\/strong>: Les acteurs \u00ab Guide touristique \u00bb et \u00ab Passager \u00bb sont associ\u00e9s respectivement aux cas d&#8217;utilisation \u00ab Enregistrement de groupe \u00bb et \u00ab Enregistrement individuel \u00bb.<\/li>\n<\/ul>\n<h3>Fronti\u00e8re m\u00e9tier<\/h3>\n<ul>\n<li>L&#8217;\u00ab A\u00e9roport \u00bb est la fronti\u00e8re m\u00e9tier, englobant tous les cas d&#8217;utilisation et les interactions dans son p\u00e9rim\u00e8tre.<\/li>\n<\/ul>\n<h2>Diff\u00e9rences entre les cas d&#8217;utilisation m\u00e9tier et les cas d&#8217;utilisation syst\u00e8me<\/h2>\n<h3>Cas d&#8217;utilisation m\u00e9tier<\/h3>\n<ul>\n<li>Se concentrer sur les objectifs et les op\u00e9rations m\u00e9tiers.<\/li>\n<li>D\u00e9crire comment l&#8217;entreprise interagit avec son environnement.<\/li>\n<li>Souvent utilis\u00e9 dans la mod\u00e9lisation des processus m\u00e9tiers et l&#8217;architecture d&#8217;entreprise.<\/li>\n<li>Exemple : \u00ab Enregistrement de groupe \u00bb \u00e0 un a\u00e9roport.<\/li>\n<\/ul>\n<h3>Cas d&#8217;utilisation syst\u00e8me<\/h3>\n<ul>\n<li>Se concentrer sur les exigences fonctionnelles d&#8217;un syst\u00e8me logiciel.<\/li>\n<li>D\u00e9crire comment les utilisateurs interagissent avec le syst\u00e8me pour atteindre des objectifs sp\u00e9cifiques.<\/li>\n<li>Souvent utilis\u00e9 dans le d\u00e9veloppement logiciel et l&#8217;ing\u00e9nierie des exigences.<\/li>\n<li>Exemple : \u00ab Connexion utilisateur \u00bb dans un syst\u00e8me bancaire en ligne.<\/li>\n<\/ul>\n<h2>Conclusion<\/h2>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/solution\/free-use-case-tool\/\">Cas d&#8217;utilisation<\/a>sont un outil puissant pour capturer et comprendre les exigences fonctionnelles d&#8217;un syst\u00e8me. En d\u00e9finissant les acteurs, les cas d&#8217;utilisation et leurs relations, vous pouvez cr\u00e9er un mod\u00e8le clair et complet du comportement attendu du syst\u00e8me. Les cas d&#8217;utilisation m\u00e9tier, en particulier, aident \u00e0 comprendre les op\u00e9rations et les interactions m\u00e9tier dans un contexte sp\u00e9cifique. L&#8217;exemple fourni d&#8217;un a\u00e9roport illustre efficacement ces concepts, montrant comment diff\u00e9rents acteurs interagissent avec divers cas d&#8217;utilisation \u00e0 l&#8217;int\u00e9rieur de la fronti\u00e8re m\u00e9tier.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction Cas d&#8217;utilisationsont un outil fondamental dans le d\u00e9veloppement logiciel et l&#8217;ing\u00e9nierie des syst\u00e8mes, offrant une m\u00e9thode structur\u00e9e pour capturer<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[3],"tags":[],"class_list":["post-11072","post","type-post","status-publish","format-standard","hentry","category-unified-modeling-language"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Tutoriel sur les cas d&#039;utilisation : Comprendre les concepts cl\u00e9s et les cas d&#039;utilisation commerciaux - 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