{"id":543,"date":"2022-01-26T01:32:23","date_gmt":"2022-01-26T01:32:23","guid":{"rendered":"https:\/\/www.cybermedian.com\/pt\/?p=543"},"modified":"2022-03-31T13:22:00","modified_gmt":"2022-03-31T05:22:00","slug":"what-is-use-case-modeling","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/pt\/what-is-use-case-modeling\/","title":{"rendered":"O que \u00e9 Modelagem de Casos de Uso?"},"content":{"rendered":"<section class=\"section section--body section--last\">\n<div class=\"section-content\">\n<div class=\"section-inner sectionLayout--insetColumn\">\n<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\">Os casos de uso modelam as vis\u00f5es do usu\u00e1rio das fun\u00e7\u00f5es do sistema, ou seja,<\/p>\n<ul class=\"postList\">\n<li id=\"5abe\" class=\"graf graf--li graf-after--p\">o que o sistema faz para o usu\u00e1rio;<\/li>\n<li id=\"8c97\" class=\"graf graf--li graf-after--li\">O que ele faz \u00e9 valioso para o usu\u00e1rio.<\/li>\n<li id=\"d81f\" class=\"graf graf--li graf-after--li\">O modelo de caso de uso fornece uma maneira de organizar, estruturar e documentar a grande quantidade de informa\u00e7\u00f5es encontradas durante a aquisi\u00e7\u00e3o de requisitos;<\/li>\n<li id=\"6643\" class=\"graf graf--li graf-after--li\">Faz parte integrante da fase de descri\u00e7\u00e3o de requisitos do processo de desenvolvimento.<\/li>\n<\/ul>\n<p id=\"93ef\" class=\"graf graf--p graf-after--li\">Os casos de uso geralmente s\u00e3o gr\u00e1ficos e os diagramas de casos de uso s\u00e3o suportados por descri\u00e7\u00f5es de texto, incluindo descri\u00e7\u00f5es de casos de uso e participantes, bem como cen\u00e1rios associados a modelos de casos de uso que tornam os m\u00e9todos de casos de uso simples e intuitivos e ferramentas ideais para discutir e esclarecer o entendimento dos desenvolvedores das necessidades do usu\u00e1rio.<\/p>\n<p id=\"ad57\" class=\"graf graf--p graf-after--p\">Uma vez que o modelo de caso de uso tenha sido conclu\u00eddo e revisado com o usu\u00e1rio, ele forma um conjunto b\u00e1sico de informa\u00e7\u00f5es estruturadas no qual os outros modelos do sistema ser\u00e3o desenhados.\u00a0O modelo de caso de uso tamb\u00e9m \u00e9 \u00fatil para testar as funcionalidades do sistema.<\/p>\n<h4 id=\"fd4f\" class=\"graf graf--h4 graf-after--p\"><span id=\"Use_Case_Model\">Modelo de caso de uso<\/span><\/h4>\n<p id=\"d351\" class=\"graf graf--p graf-after--h4\">O modelo de caso de uso consiste em:<\/p>\n<ul class=\"postList\">\n<li id=\"a2fe\" class=\"graf graf--li graf-after--p\">um diagrama de caso de uso,<\/li>\n<li id=\"d525\" class=\"graf graf--li graf-after--li\">um conjunto de descri\u00e7\u00f5es de casos de uso,<\/li>\n<li id=\"9c05\" class=\"graf graf--li graf-after--li\">um conjunto de descri\u00e7\u00f5es de atores<\/li>\n<li id=\"77d8\" class=\"graf graf--li graf-after--li\">um conjunto de cen\u00e1rios (descritos por fluxo de eventos).<\/li>\n<\/ul>\n<p id=\"e8cc\" class=\"graf graf--p graf-after--li\">O diagrama de caso de uso usa quatro conceitos para modelar graficamente o dom\u00ednio do problema: caso de uso, ator, link de relacionamento e limite.<\/p>\n<p id=\"51c7\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\">Caso de uso<\/strong>\u00a0: uma elipse marcada com o nome do caso de uso.\u00a0Por conven\u00e7\u00e3o, iniciamos cada nome de caso de uso com um verbo para indicar que o caso de uso representa um processo.\u00a0Portanto, usamos \u201cmanter lista de clientes\u201d em vez de \u201clista de clientes\u201d e \u201cprocessar consulta\u201d em vez de \u201cconsultar\u201d.<\/p>\n<p id=\"3d3d\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\">Um ator<\/strong>\u00a0: um simples boneco com o nome do ator.\u00a0Colocamos em mai\u00fascula o nome do ator para facilitar a identifica\u00e7\u00e3o (por exemplo, Bibliotec\u00e1rio, Aluno).<\/p>\n<p id=\"adc2\" class=\"graf graf--p graf-after--p\">Os atores podem ser\u00a0\u00a0<strong class=\"markup--strong markup--p-strong\">pessoas, outros sistemas, acionadores de tempo ou acionadores de eventos<\/strong>\u00a0.\u00a0Um ator especifica um papel desempenhado por um usu\u00e1rio ou qualquer outro sistema que interage com o sujeito.\u00a0Pode representar pap\u00e9is desempenhados por usu\u00e1rios humanos, hardware externo ou outros assuntos.<\/p>\n<p id=\"2093\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\">Rela\u00e7\u00e3o de casos de uso<\/strong>\u00a0: uma linha conectando atores a casos de uso.\u00a0Essa linha nos mostra quais atores est\u00e3o associados a quais casos de uso.\u00a0Essa rela\u00e7\u00e3o tamb\u00e9m \u00e9 chamada de comunica\u00e7\u00e3o.<\/p>\n<p id=\"c9a5\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\">Limites<\/strong>\u00a0: Um ret\u00e2ngulo desenhado em torno dos casos de uso que os separa dos atores para descrever o escopo do sistema.\u00a0Os limites do sistema s\u00e3o opcionais e muitas vezes ignorados.<\/p>\n<figure id=\"7aa4\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/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\">Finalidade do Diagrama de Caso de Uso<\/span><\/h4>\n<p id=\"8f60\" class=\"graf graf--p graf-after--h4\">A modelagem de casos de uso \u00e9 feita em diferentes est\u00e1gios do processo de desenvolvimento de software orientado a objetos.\u00a0O n\u00edvel de detalhe e o tipo de informa\u00e7\u00e3o exibida em cada fase depende da finalidade do modelo.\u00a0As informa\u00e7\u00f5es relacionadas ao projeto detalhado ou implementa\u00e7\u00e3o do sistema n\u00e3o s\u00e3o inclu\u00eddas nos est\u00e1gios iniciais, quando o objetivo principal \u00e9 a comunica\u00e7\u00e3o com os usu\u00e1rios.\u00a0Mais tarde, detalhes t\u00e9cnicos, como o design da interface do usu\u00e1rio, ser\u00e3o adicionados para refer\u00eancia dos programadores.<\/p>\n<h4 id=\"7b1d\" class=\"graf graf--h4 graf-after--p\"><span id=\"Use_Case_vs_Class_Diagram_in_System_Development\">Caso de uso versus diagrama de classes no desenvolvimento de sistemas<\/span><\/h4>\n<p id=\"3f58\" class=\"graf graf--p graf-after--h4\">\u00c9 importante perceber que, embora o modelo de caso de uso divida e estruture os requisitos do sistema, essa estrutura n\u00e3o \u00e9 utilizada como base para a constru\u00e7\u00e3o de novos sistemas de software que, na verdade, \u00e9 fornecida por diagramas de classes.<\/p>\n<blockquote id=\"ec36\" class=\"graf graf--blockquote graf-after--p\"><p>O modelo de caso de uso constr\u00f3i o sistema como a principal vis\u00e3o de tarefa do usu\u00e1rio.<\/p><\/blockquote>\n<blockquote id=\"d311\" class=\"graf graf--blockquote graf-after--blockquote graf--trailing\"><p>Diagramas de classe constroem sistemas usando um conjunto de componentes de software l\u00f3gicos (objetos).<\/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\">Diagramas 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\/\">O que \u00e9 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\/\">Por que modelagem 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\/\">Vis\u00e3o geral dos 14 tipos de diagrama 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\/\">O que \u00e9 Diagrama de Classes?<\/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\/\">O que \u00e9 diagrama de componentes?<\/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\/\">O que \u00e9 Diagrama de Implanta\u00e7\u00e3o?<\/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\/\">O que \u00e9 Diagrama de Objetos?<\/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\/\">O que \u00e9 Diagrama de Pacotes?<\/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\/\">O que \u00e9 diagrama de estrutura composta?<\/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\/\">O que \u00e9 Diagrama de Perfil?<\/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\/\">O que \u00e9 o Diagrama de Caso de Uso?<\/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\/\">O que \u00e9 Diagrama de Atividades?<\/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\/\">O que \u00e9 diagrama de m\u00e1quina de estado?<\/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\/\">O que \u00e9 Diagrama de Sequ\u00eancia?<\/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\/\">O que \u00e9 Diagrama de Comunica\u00e7\u00e3o?<\/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\/\">O que \u00e9 o Diagrama de Vis\u00e3o Geral da Intera\u00e7\u00e3o?<\/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\/\">O que \u00e9 diagrama de tempo<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Os casos de uso s\u00e3o freq\u00fcentemente gr\u00e1ficos, e os diagramas de caso de uso s\u00e3o suportados por descri\u00e7\u00f5es de texto, incluindo descri\u00e7\u00f5es de caso de uso e de participantes, assim como cen\u00e1rios associados a modelos de caso de uso que fazem uso de m\u00e9todos de caso simples e intuitivos e ferramentas ideais para discutir e esclarecer o entendimento dos desenvolvedores sobre as necessidades dos usu\u00e1rios.<\/p>\n","protected":false},"author":1,"featured_media":1340,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[3],"tags":[52,63,62,53],"class_list":["post-543","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unified-modeling-language","tag-cn-done","tag-es-done","tag-ja-done","tag-tw-done"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O que \u00e9 Modelagem de Casos de Uso? - Cibermediano<\/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\/pt\/what-is-use-case-modeling\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" 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