{"id":10120,"date":"2022-01-26T01:32:23","date_gmt":"2022-01-26T01:32:23","guid":{"rendered":"https:\/\/www.cybermedian.com\/fr\/?p=10120"},"modified":"2026-04-20T09:13:20","modified_gmt":"2026-04-20T09:13:20","slug":"quest-ce-que-la-modelisation-de-cas-dutilisation","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/fr\/what-is-use-case-modeling\/","title":{"rendered":"Qu&#8217;est-ce que la mod\u00e9lisation de cas d&#8217;utilisation ?"},"content":{"rendered":"<section class=\"section section--body section--first\">\n<div class=\"section-content\">\n<div class=\"section-inner sectionLayout--insetColumn\">\n<p id=\"a9c3\" class=\"graf graf--p graf-after--h3\">Les cas d&#8217;utilisation mod\u00e9lisent les vues utilisateur des fonctions syst\u00e8me, c&#8217;est-\u00e0-dire<\/p>\n<ul class=\"postList\">\n<li id=\"5abe\" class=\"graf graf--li graf-after--p\">ce que fait le syst\u00e8me vis-\u00e0-vis de l&#8217;utilisateur\u00a0;<\/li>\n<li id=\"8c97\" class=\"graf graf--li graf-after--li\">Ce qu&#8217;il fait est pr\u00e9cieux pour l&#8217;utilisateur.<\/li>\n<li id=\"d81f\" class=\"graf graf--li graf-after--li\">Le mod\u00e8le de cas d&#8217;utilisation fournit un moyen d&#8217;organiser, de structurer et de documenter la grande quantit\u00e9 d&#8217;informations trouv\u00e9es lors de l&#8217;acquisition des exigences\u00a0;<\/li>\n<li id=\"6643\" class=\"graf graf--li graf-after--li\">Il fait partie int\u00e9grante de la phase de description des exigences du processus de d\u00e9veloppement.<\/li>\n<\/ul>\n<p id=\"93ef\" class=\"graf graf--p graf-after--li\">Les cas d&#8217;utilisation sont souvent graphiques et les diagrammes de cas d&#8217;utilisation sont soutenus par des descriptions textuelles, y compris des descriptions de cas d&#8217;utilisation et de participants, ainsi que des sc\u00e9narios associ\u00e9s \u00e0 des mod\u00e8les de cas d&#8217;utilisation qui rendent les m\u00e9thodes de cas d&#8217;utilisation simples et intuitives et des outils id\u00e9aux pour discuter et clarifier la compr\u00e9hension des d\u00e9veloppeurs. des besoins des utilisateurs.<\/p>\n<p id=\"ad57\" class=\"graf graf--p graf-after--p\">Une fois le mod\u00e8le de cas d&#8217;utilisation compl\u00e9t\u00e9 et revu avec l&#8217;utilisateur, il forme un pool d&#8217;informations structur\u00e9 de base sur lequel les autres mod\u00e8les du syst\u00e8me seront puis\u00e9s.\u00a0Le mod\u00e8le de cas d&#8217;utilisation est \u00e9galement utile pour tester les fonctionnalit\u00e9s du syst\u00e8me.<\/p>\n<h4 id=\"fd4f\" class=\"graf graf--h4 graf-after--p\"><span id=\"Use_Case_Model\">Mod\u00e8le de cas d&#8217;utilisation<\/span><\/h4>\n<p id=\"d351\" class=\"graf graf--p graf-after--h4\">Le mod\u00e8le de cas d&#8217;utilisation consiste en\u00a0:<\/p>\n<ul class=\"postList\">\n<li id=\"a2fe\" class=\"graf graf--li graf-after--p\">un diagramme de cas d&#8217;utilisation,<\/li>\n<li id=\"d525\" class=\"graf graf--li graf-after--li\">un ensemble de descriptions de cas d&#8217;utilisation,<\/li>\n<li id=\"9c05\" class=\"graf graf--li graf-after--li\">un ensemble de descriptions d&#8217;acteurs<\/li>\n<li id=\"77d8\" class=\"graf graf--li graf-after--li\">un ensemble de sc\u00e9narios (d\u00e9crits par un flux d&#8217;\u00e9v\u00e9nements).<\/li>\n<\/ul>\n<p id=\"e8cc\" class=\"graf graf--p graf-after--li\">Le diagramme de cas d&#8217;utilisation utilise quatre concepts pour mod\u00e9liser graphiquement le domaine du probl\u00e8me\u00a0: cas d&#8217;utilisation, acteur, lien de relation et fronti\u00e8re.<\/p>\n<p id=\"51c7\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\">Cas d&#8217;utilisation<\/strong>\u00a0: une ellipse marqu\u00e9e du nom du cas d&#8217;utilisation.\u00a0Par convention, nous commen\u00e7ons chaque nom de cas d&#8217;utilisation par un verbe pour indiquer que le cas d&#8217;utilisation repr\u00e9sente un processus.\u00a0Par cons\u00e9quent, nous utilisons &#8220;maintenir la liste des clients&#8221; au lieu de &#8220;liste des clients&#8221; et &#8220;traiter la requ\u00eate&#8221; au lieu de &#8220;requ\u00eate&#8221;.<\/p>\n<p id=\"3d3d\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\">Un acteur<\/strong>\u00a0: un simple bonhomme allumette avec le nom de l&#8217;acteur.\u00a0Nous mettons une majuscule au nom de l&#8217;acteur pour faciliter l&#8217;identification (par exemple, biblioth\u00e9caire, \u00e9tudiant).<\/p>\n<p id=\"adc2\" class=\"graf graf--p graf-after--p\">Les acteurs peuvent \u00eatre des\u00a0\u00a0<strong class=\"markup--strong markup--p-strong\">personnes, d&#8217;autres syst\u00e8mes, des d\u00e9clencheurs temporels ou des d\u00e9clencheurs d&#8217;\u00e9v\u00e9nements<\/strong>\u00a0.\u00a0Un acteur sp\u00e9cifie un r\u00f4le jou\u00e9 par un utilisateur ou tout autre syst\u00e8me qui interagit avec le sujet.\u00a0Il peut repr\u00e9senter des r\u00f4les jou\u00e9s par des utilisateurs humains, du mat\u00e9riel externe ou d&#8217;autres sujets.<\/p>\n<p id=\"2093\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\">Relation de cas d&#8217;utilisation<\/strong>\u00a0: une ligne reliant les acteurs aux cas d&#8217;utilisation.\u00a0Cette ligne nous montre quels acteurs sont associ\u00e9s \u00e0 quels cas d&#8217;utilisation.\u00a0Cette relation est aussi appel\u00e9e communication.<\/p>\n<p id=\"c9a5\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\">Fronti\u00e8res<\/strong>\u00a0: Un rectangle dessin\u00e9 autour des cas d&#8217;utilisation qui les s\u00e9pare des acteurs pour d\u00e9crire le p\u00e9rim\u00e8tre du syst\u00e8me.\u00a0Les limites du syst\u00e8me sont facultatives et souvent ignor\u00e9es.<\/p>\n<figure id=\"7aa4\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/01\/0ssGyj09FnMZ9HOlQ.png\" data-image-id=\"0*ssGyj09FnMZ9HOlQ.png\" data-width=\"643\" data-height=\"393\" data-is-featured=\"true\" \/><\/figure>\n<h4 id=\"363a\" class=\"graf graf--h4 graf-after--figure\"><span id=\"Purpose_of_Use_Case_Diagram\">Objectif du diagramme de cas d&#8217;utilisation<\/span><\/h4>\n<p id=\"8f60\" class=\"graf graf--p graf-after--h4\">La mod\u00e9lisation des cas d&#8217;utilisation est effectu\u00e9e \u00e0 diff\u00e9rentes \u00e9tapes du processus de d\u00e9veloppement logiciel orient\u00e9 objet.\u00a0Le niveau de d\u00e9tail et le type d&#8217;informations affich\u00e9es dans chaque phase d\u00e9pendent de l&#8217;objectif du mod\u00e8le.\u00a0Les informations relatives \u00e0 la conception d\u00e9taill\u00e9e ou \u00e0 la mise en \u0153uvre du syst\u00e8me ne sont pas incluses dans les premi\u00e8res \u00e9tapes, lorsque l&#8217;objectif principal est de communiquer avec les utilisateurs.\u00a0Plus tard, des d\u00e9tails techniques, tels que la conception de l&#8217;interface utilisateur, seront ajout\u00e9s pour la r\u00e9f\u00e9rence des programmeurs.<\/p>\n<h4 id=\"7b1d\" class=\"graf graf--h4 graf-after--p\"><span id=\"Use_Case_vs_Class_Diagram_in_System_Development\">Cas d&#8217;utilisation vs diagramme de classes dans le d\u00e9veloppement de syst\u00e8mes<\/span><\/h4>\n<p id=\"3f58\" class=\"graf graf--p graf-after--h4\">Il est important de r\u00e9aliser que bien que le mod\u00e8le de cas d&#8217;utilisation divise et structure les exigences du syst\u00e8me, cette structure n&#8217;est pas utilis\u00e9e comme base pour la construction de nouveaux syst\u00e8mes logiciels qui est, en fait, fournie par des diagrammes de classes.<\/p>\n<blockquote id=\"ec36\" class=\"graf graf--blockquote graf-after--p\"><p>Le mod\u00e8le de cas d&#8217;utilisation construit le syst\u00e8me comme vue principale des t\u00e2ches de l&#8217;utilisateur.<\/p><\/blockquote>\n<blockquote id=\"d311\" class=\"graf graf--blockquote graf-after--blockquote graf--trailing\"><p>Les diagrammes de classes construisent des syst\u00e8mes en utilisant un ensemble de composants logiciels logiques (objets).<\/p><\/blockquote>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"section section--body section--last\">\n<div class=\"section-divider\">\n<hr class=\"section-divider\" \/>\n<\/div>\n<div class=\"section-content\">\n<div class=\"section-inner sectionLayout--insetColumn\">\n<h4 id=\"95f9\" class=\"graf graf--h4 graf--leading\"><span id=\"UML_Diagrams\">Diagrammes UML<\/span><\/h4>\n<ul class=\"postList\">\n<li id=\"83f9\" class=\"graf graf--li graf-after--h4\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-uml\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-uml\/\">Qu&#8217;est-ce qu&#8217;UML ?<\/a><\/li>\n<li id=\"beb7\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/why-uml-modeling\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/why-uml-modeling\/\">Pourquoi la mod\u00e9lisation UML ?<\/a><\/li>\n<li id=\"dcdc\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/overview-of-the-14-uml-diagram-types\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/overview-of-the-14-uml-diagram-types\/\">Pr\u00e9sentation des 14 types de diagrammes UML<\/a><\/li>\n<li id=\"7bac\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-class-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-class-diagram\/\">Qu&#8217;est-ce qu&#8217;un diagramme de classes\u00a0?<\/a><\/li>\n<li id=\"a38b\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-component-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-component-diagram\/\">Qu&#8217;est-ce qu&#8217;un diagramme de composants\u00a0?<\/a><\/li>\n<li id=\"bf6f\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-deployment-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-deployment-diagram\/\">Qu&#8217;est-ce qu&#8217;un diagramme de d\u00e9ploiement\u00a0?<\/a><\/li>\n<li id=\"0f0d\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-object-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-object-diagram\/\">Qu&#8217;est-ce qu&#8217;un diagramme d&#8217;objets\u00a0?<\/a><\/li>\n<li id=\"41b1\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-package-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-package-diagram\/\">Qu&#8217;est-ce qu&#8217;un diagramme de package\u00a0?<\/a><\/li>\n<li id=\"4142\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-composite-structure-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-composite-structure-diagram\/\">Qu&#8217;est-ce qu&#8217;un diagramme de structure composite\u00a0?<\/a><\/li>\n<li id=\"d17f\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-profile-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-profile-diagram\/\">Qu&#8217;est-ce qu&#8217;un diagramme de profil\u00a0?<\/a><\/li>\n<li id=\"301f\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-use-case-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-use-case-diagram\/\">Qu&#8217;est-ce qu&#8217;un diagramme de cas d&#8217;utilisation\u00a0?<\/a><\/li>\n<li id=\"ca94\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-activity-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-activity-diagram\/\">Qu&#8217;est-ce qu&#8217;un diagramme d&#8217;activit\u00e9\u00a0?<\/a><\/li>\n<li id=\"964b\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-state-machine-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-state-machine-diagram\/\">Qu&#8217;est-ce qu&#8217;un diagramme de machine d&#8217;\u00e9tat\u00a0?<\/a><\/li>\n<li id=\"6ac2\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-sequence-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-sequence-diagram\/\">Qu&#8217;est-ce qu&#8217;un diagramme de s\u00e9quence\u00a0?<\/a><\/li>\n<li id=\"ce4b\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-communication-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-communication-diagram\/\">Qu&#8217;est-ce qu&#8217;un diagramme de communication\u00a0?<\/a><\/li>\n<li id=\"b649\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-interaction-overview-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-interaction-overview-diagram\/\">Qu&#8217;est-ce qu&#8217;un diagramme d&#8217;aper\u00e7u d&#8217;interaction\u00a0?<\/a><\/li>\n<li id=\"9542\" class=\"graf graf--li graf-after--li graf--trailing\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-timing-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-timing-diagram\/\">Qu&#8217;est-ce que le diagramme de temps<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Les cas d&#8217;utilisation sont souvent graphiques et les diagrammes de cas d&#8217;utilisation sont \u00e9tay\u00e9s par des descriptions textuelles, notamment des descriptions de cas d&#8217;utilisation et de participants, ainsi que des sc\u00e9narios associ\u00e9s \u00e0 des mod\u00e8les de cas d&#8217;utilisation qui rendent les m\u00e9thodes de cas d&#8217;utilisation simples et intuitives et constituent des outils id\u00e9aux pour discuter et clarifier la compr\u00e9hension des besoins des utilisateurs par les d\u00e9veloppeurs.<\/p>\n","protected":false},"author":5,"featured_media":10122,"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-10120","post","type-post","status-publish","format-standard","has-post-thumbnail","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>Qu&#039;est-ce que la mod\u00e9lisation de cas d&#039;utilisation ? - Cyberm\u00e9diane<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cybermedian.com\/fr\/what-is-use-case-modeling\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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