{"id":9248,"date":"2022-02-28T03:51:08","date_gmt":"2022-02-28T03:51:08","guid":{"rendered":"https:\/\/www.cybermedian.com\/pt\/?p=9248"},"modified":"2022-04-01T14:10:13","modified_gmt":"2022-04-01T06:10:13","slug":"__trashed-25","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/pt\/capturing-functional-requirements-with-use-cases-and-user-stories","title":{"rendered":"Capturando requisitos funcionais com casos de uso e hist\u00f3rias de usu\u00e1rios"},"content":{"rendered":"<p><span>O primeiro passo na defini\u00e7\u00e3o de um novo produto, servi\u00e7o, processo ou sistema \u00e9 definir os requisitos, ou seja, requisitos funcionais ou n\u00e3o funcionais espec\u00edficos.<\/span><\/p>\n<ul>\n<li><strong><span>Os requisitos funcionais<\/span><\/strong><span>\u00a0descrevem como o produto ou servi\u00e7o atende \u00e0s necessidades do cliente.\u00a0Isso inclui recursos e funcionalidades em casos de uso que documentam como os usu\u00e1rios ir\u00e3o interagir com o produto ou servi\u00e7o.<\/span><\/li>\n<li><strong><span>Requisitos n\u00e3o funcionais<\/span><\/strong><span>\u00a0s\u00e3o atributos operacionais e de produto que \u00e0s vezes n\u00e3o s\u00e3o \u00f3bvios para o usu\u00e1rio, incluindo desempenho, usabilidade, durabilidade, seguran\u00e7a e financeiro (pre\u00e7o e custo).<\/span><\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/03\/functional-and-non-functional-requirements-illustration.png\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#infoart:proj=0&amp;type=ScenariosBusiness&amp;gallery=\/repository\/c0489f2b-291f-4f81-8d74-4a8c4afce945.xml&amp;name=Functional%20%26%20Non-%20Functional%20Requirements%20Illustration\"><span>EDITE ESTA ILUSTRA\u00c7\u00c3O \u2013 REQUISITOS FUNCIONAIS VERSUS REQUISITOS N\u00c3O FUNCIONAIS<\/span><\/a><\/p>\n<p><span>Os requisitos funcionais podem ser pensados \u200b\u200bcomo o que o produto precisa fazer para o cliente, enquanto os requisitos n\u00e3o funcionais podem ser vistos como restri\u00e7\u00f5es que o produto ou servi\u00e7o precisa ser projetado para atender.<\/span><\/p>\n<p><span>Os requisitos funcionais capturam o comportamento pretendido do sistema.\u00a0Esse comportamento pode ser expresso como servi\u00e7os, tarefas ou fun\u00e7\u00f5es que o sistema deve executar.\u00a0Na ind\u00fastria de desenvolvimento de software, a abordagem de caso de uso rapidamente se tornou uma pr\u00e1tica difundida para capturar requisitos funcionais.\u00a0Isso \u00e9 especialmente verdadeiro na comunidade orientada a objetos e UML onde eles se originaram, mas sua aplicabilidade n\u00e3o se limita a sistemas orientados a objetos.<\/span><\/p>\n<h3><span id=\"What_Techniques_for_Capturing_Functional_Requirements\"><span>Quais t\u00e9cnicas para capturar os requisitos funcionais?<\/span><\/span><\/h3>\n<p><span>Os requisitos funcionais geralmente s\u00e3o capturados na forma de casos de uso ou cen\u00e1rios de usu\u00e1rio.\u00a0Esses termos \u00e0s vezes s\u00e3o usados \u200b\u200b\u200b\u200bde forma intercambi\u00e1vel, mas na verdade significam coisas ligeiramente diferentes.<\/span><\/p>\n<ul>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-use-case-diagram\/\"><strong><span>Os casos de uso<\/span><\/strong>\u00a0<\/a><span>se concentram mais no sistema e no que ele deve fazer para atender \u00e0s necessidades dos usu\u00e1rios.<\/span><\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/agile-software-development\/what-is-user-story\/\"><strong><span>As hist\u00f3rias de usu\u00e1rios<\/span><\/strong><\/a><span>\u00a0, por outro lado, mostram a funcionalidade do produto do ponto de vista do usu\u00e1rio, especificando as fun\u00e7\u00f5es do usu\u00e1rio e os objetivos espec\u00edficos que eles desejam alcan\u00e7ar.<\/span><\/li>\n<\/ul>\n<h3><span id=\"Capturing_Functional_Requirement_Using_User_Stories\"><span>Capturando o requisito funcional usando hist\u00f3rias de usu\u00e1rio<\/span><\/span><\/h3>\n<p><span>As hist\u00f3rias de usu\u00e1rio s\u00e3o um m\u00e9todo leve para capturar rapidamente o \u201cquem\u201d, \u201co qu\u00ea\u201d e \u201cpor que\u201d dos requisitos de um produto.\u00a0Simplificando, hist\u00f3rias de usu\u00e1rios s\u00e3o ideias que expressam as necessidades que os usu\u00e1rios desejam.\u00a0As hist\u00f3rias de usu\u00e1rios s\u00e3o curtas e cada elemento geralmente cont\u00e9m menos de 10 ou 15 palavras.\u00a0As hist\u00f3rias de usu\u00e1rios s\u00e3o listas de \u201ctarefas\u201d que ajudam a identificar as etapas ao longo do caminho do projeto.\u00a0Eles ajudam a garantir que seu processo e o produto resultante atendam aos seus requisitos.<\/span><\/p>\n<h3><span id=\"User_Story_Template\"><span>Modelo de hist\u00f3ria de usu\u00e1rio<\/span><\/span><\/h3>\n<p><span>As hist\u00f3rias de usu\u00e1rios capturam apenas os elementos essenciais de um requisito:<\/span><\/p>\n<ul>\n<li><span>Para quem \u00e9?<\/span><\/li>\n<li><span>O que espera do sistema?<\/span><\/li>\n<li><span>Por que \u00e9 importante (opcional?)?<\/span><\/li>\n<\/ul>\n<p><span>Aqui est\u00e1 um formato simples de hist\u00f3ria de usu\u00e1rio usado por 70% dos profissionais:<\/span><\/p>\n<p id=\"yiqoeeh\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9453 aligncenter\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/03\/img_621d7a4822a37.png\" sizes=\"auto, (max-width: 552px) 100vw, 552px\" srcset=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/03\/img_621d7a4822a37.png 552w, https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/03\/img_621d7a4822a37-300x68.png 300w\" alt=\"\" width=\"552\" height=\"125\" \/><\/p>\n<p><b><span>Fun\u00e7\u00e3o<\/span><\/b><span>\u00a0\u00a0\u2013 O usu\u00e1rio deve ser um humano real que interage com o sistema.<\/span><\/p>\n<ul>\n<li><span>Seja o mais espec\u00edfico poss\u00edvel<\/span><\/li>\n<li><span>A equipe de desenvolvimento N\u00c3O \u00e9 um usu\u00e1rio<\/span><\/li>\n<\/ul>\n<p><b><span>A\u00e7\u00e3o<\/span><\/b><span>\u00a0\u00a0\u2013 O comportamento do sistema deve ser escrito como uma a\u00e7\u00e3o.<\/span><\/p>\n<ul>\n<li><span>Geralmente exclusivo para cada hist\u00f3ria de usu\u00e1rio<\/span><\/li>\n<li><span>O \u201csistema\u201d est\u00e1 impl\u00edcito e n\u00e3o \u00e9 escrito na hist\u00f3ria<\/span><\/li>\n<li><span>Voz ativa, n\u00e3o voz passiva (\u201cPosso ser notificado\u201d)<\/span><\/li>\n<\/ul>\n<p><b><span>Benef\u00edcios<\/span><\/b><span>\u00a0\u00a0\u2013 O benef\u00edcio deve ser um resultado do mundo real que n\u00e3o seja funcional ou externo ao sistema.<\/span><\/p>\n<ul>\n<li><span>Muitas hist\u00f3rias podem compartilhar a mesma declara\u00e7\u00e3o de benef\u00edcio.<\/span><\/li>\n<li><span>O benef\u00edcio pode ser para outros usu\u00e1rios ou clientes, n\u00e3o apenas para o usu\u00e1rio da hist\u00f3ria.<\/span><\/li>\n<\/ul>\n<p id=\"daUbOwZ\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-9419 aligncenter\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/img_621c922949c88.png\" sizes=\"auto, (max-width: 345px) 100vw, 345px\" srcset=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/img_621c922949c88.png 445w, https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/img_621c922949c88-300x249.png 300w\" alt=\"\" width=\"345\" height=\"287\" \/><\/p>\n<h3><span id=\"How_to_Identify_Functional_Requirements_with_Use_Case\"><span>Como identificar os requisitos funcionais com o caso de uso?<\/span><\/span><\/h3>\n<p><span>Para entender completamente os requisitos funcionais do sistema, voc\u00ea deve saber para quem \u00e9 o sistema, ou seja, quem usar\u00e1 o sistema?<\/span><\/p>\n<p><span>A resposta a esta pergunta \u00e9: o\u00a0<\/span><strong><span>ator<\/span><\/strong><span>\u00a0na an\u00e1lise de casos de uso<\/span><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/tutorials\/use-case-diagram-tutorial\/\"><span>Casos de uso<\/span><\/a><span>\u00a0ou hist\u00f3rias de usu\u00e1rios capturam requisitos funcionais cujo comportamento pode ser expresso como servi\u00e7os, tarefas ou fun\u00e7\u00f5es que o sistema deve executar.\u00a0Os casos de uso definem a intera\u00e7\u00e3o entre o usu\u00e1rio e o servi\u00e7o do sistema que pode ajudar a definir os requisitos funcionais do sistema em desenvolvimento.\u00a0Ou, em outras palavras, o que o produto ou servi\u00e7o precisa fazer para satisfazer as necessidades e desejos do cliente.<\/span><\/p>\n<p><span>Um caso de uso come\u00e7a com um \u201cator\u201d ou \u201cquem\u201d, um usu\u00e1rio espec\u00edfico do produto ou servi\u00e7o.<\/span><\/p>\n<p><span>Um\u00a0<\/span><a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/types-of-actor-in-use-case-model\/\"><span>ator<\/span><\/a><span>\u00a0\u00e9 uma pessoa ou um sistema externo que desempenha um papel na intera\u00e7\u00e3o com o sistema.\u00a0Inst\u00e2ncias de atores podem ser indiv\u00edduos ou sistemas externos;\u00a0no entanto, cada ator fornece uma perspectiva \u00fanica e importante do sistema, uma perspectiva que \u00e9 comum a cada inst\u00e2ncia (pessoa\/usu\u00e1rio real) do ator.<\/span><\/p>\n<h3><span id=\"Real_User_vs_Use_Case_Actor\"><span>Usu\u00e1rio real x ator de caso de uso<\/span><\/span><\/h3>\n<p><span>Para entender completamente o prop\u00f3sito do sistema, \u00e9 preciso saber para quem \u00e9 o sistema, ou seja, quem o utilizar\u00e1.\u00a0Os diferentes tipos de usu\u00e1rio s\u00e3o representados como Ator (fun\u00e7\u00f5es).<\/span><\/p>\n<p><span>A diferen\u00e7a entre uma fun\u00e7\u00e3o e um usu\u00e1rio individual \u00e9 que uma fun\u00e7\u00e3o representa uma classe espec\u00edfica de usu\u00e1rios, em vez de um usu\u00e1rio real.\u00a0Diferentes usu\u00e1rios podem desempenhar o mesmo papel, caso em que cada usu\u00e1rio constitui uma inst\u00e2ncia de um ator.<\/span><\/p>\n<p><span>Essa distin\u00e7\u00e3o entre atores e inst\u00e2ncias de atores \u00e9 ilustrada a seguir:<\/span><\/p>\n<p><span>A Figura abaixo mostra um caso em que Mary e John s\u00e3o clientes de uma m\u00e1quina de venda autom\u00e1tica.\u00a0Quando eles usam a m\u00e1quina de venda autom\u00e1tica, cada um \u00e9 representado por uma inst\u00e2ncia de um ator chamado cliente que espera ter acesso a determinadas fun\u00e7\u00f5es do sistema (neste caso a impress\u00e3o de comprar comida).<\/span><\/p>\n<p id=\"ugILZUa\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/03\/using-vending-machine-illustration.png\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#infoart:proj=0&amp;type=ScenariosTechnology&amp;gallery=\/repository\/75896226-7adb-4b72-a0d8-44809328e33c.xml&amp;name=Using%20Vending%20Machine%20Illustration\"><span>EDITE ESTA ILUSTRA\u00c7\u00c3O DE M\u00c1QUINA DE VENDA AUTOM\u00c1TICA<\/span><\/a><\/p>\n<p id=\"NsIJUxo\"><span>Por outro lado, o mesmo usu\u00e1rio pode desempenhar v\u00e1rios pap\u00e9is (ou seja, a mesma pessoa pode desempenhar pap\u00e9is diferentes).<\/span><\/p>\n<p><span>Por exemplo, o Dr. Gates, que \u00e9 membro do comit\u00ea da Computer Society.\u00a0Ele \u00e9 respons\u00e1vel por gerenciar o sistema de gerenciamento de membros, como adicionar e remover contas de usu\u00e1rios.\u00a0Quando ele faz isso, ele desempenha um papel chamado Administrador (Ator).\u00a0No entanto, o mesmo Dr. Gates tamb\u00e9m pode ser membro da Computer Society.\u00a0Neste caso, ele tamb\u00e9m desempenharia um papel chamado \u201cMembro\u201d (Ator)<\/span><\/p>\n<h3><span id=\"How_to_get_the_functional_requirements_by_identifying_the_use_cases_of_the_system\"><span>Como obter os requisitos funcionais identificando os casos de uso do sistema<\/span><\/span><\/h3>\n<p><span>Um caso de uso pode ser identificado perguntando aos interessados \u200b\u200bos seguintes tipos de perguntas (\u00e0s quais eles devem responder do ponto de vista dos atores):<\/span><\/p>\n<ul>\n<li><span>O que os usu\u00e1rios nesta fun\u00e7\u00e3o est\u00e3o tentando realizar?<\/span><\/li>\n<li><span>Para cumprir esse papel, o que os usu\u00e1rios precisam ser capazes de fazer?<\/span><\/li>\n<li><span>Quais s\u00e3o as principais tarefas dos usu\u00e1rios nessa fun\u00e7\u00e3o?<\/span><\/li>\n<li><span>Quais informa\u00e7\u00f5es os usu\u00e1rios nessa fun\u00e7\u00e3o precisam examinar, criar ou alterar?<\/span><\/li>\n<li><span>O que os usu\u00e1rios nessa fun\u00e7\u00e3o precisam ser informados pelo sistema?<\/span><\/li>\n<li><span>O que os usu\u00e1rios nessa fun\u00e7\u00e3o precisam informar ao sistema?<\/span><\/li>\n<\/ul>\n<p><strong><span>Observe que:<\/span><\/strong><\/p>\n<p><span>Os casos de uso s\u00e3o frequentemente usados \u200b\u200bcomo um meio de descobrir e representar requisitos funcionais e de sistema, pois um caso de uso define as intera\u00e7\u00f5es e tarefas necess\u00e1rias para executar para cumprir uma meta de neg\u00f3cios espec\u00edfica.\u00a0No entanto, eles geralmente n\u00e3o s\u00e3o uma boa maneira de definir requisitos n\u00e3o funcionais, como desempenho e qualidade do sistema.<\/span><\/p>\n<h3><span id=\"References\"><span>Refer\u00eancias<\/span><\/span><\/h3>\n<ul>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/agile-software-development\/user-story-vs-use-case\/\"><span>Hist\u00f3ria de usu\u00e1rio versus caso de uso para desenvolvimento de software \u00e1gil<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/agile-software-development\/what-is-user-story\/\"><span>O que \u00e9 hist\u00f3ria de usu\u00e1rio?<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/agile-software-development\/what-is-user-story-mapping\/\"><span>O que \u00e9 Mapeamento de Hist\u00f3ria de Usu\u00e1rio?<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/sysml\/identify-user-requirements-with-use-case-diagrams\/\"><span>Identifique os requisitos do usu\u00e1rio com diagramas de caso de uso<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/wireframe\/how-to-use-wireframes-with-user-stories\/\"><span>Como usar wireframes com hist\u00f3rias de usu\u00e1rios?<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/agile-software-development\/what-is-use-case-driven-approach-for-agile\/\"><span>Abordagem Orientada a Casos de Uso para Desenvolvimento \u00c1gil<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/use-case\/what-is-use-case-specification\/\"><span>O que \u00e9 Especifica\u00e7\u00e3o de Caso de Uso?<\/span><\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>O primeiro passo na defini\u00e7\u00e3o de um novo produto, servi\u00e7o, processo ou sistema \u00e9 definir os requisitos, ou seja, requisitos<\/p>\n","protected":false},"author":1,"featured_media":9458,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[5,12],"tags":[52,63,62,53],"class_list":["post-9248","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-software-engineering","category-user-story","tag-cn-done","tag-es-done","tag-ja-done","tag-tw-done"],"yoast_head":"<!-- This site is optimized with the 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