UML Use Case Diagram Tutorial | Lucidchart

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1220px){.css-qaa7ow-navDropdownMenu{width:-webkit-fit-content;width:-moz-fit-content;width:fit-content;left:15%;}}@media only screen and (min-width: 1440px){.css-qaa7ow-navDropdownMenu{margin:0 7.5rem;}}</style><style data-emotion="css 1ni33bu-navDropdownMenu">.css-1ni33bu-navDropdownMenu{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;-webkit-box-flex-wrap:nowrap;-webkit-flex-wrap:nowrap;-ms-flex-wrap:nowrap;flex-wrap:nowrap;background-color:#FFFFFF;height:100%;max-height:0;width:100%;overflow:hidden;}@media only screen and (min-width: 768px){.css-1ni33bu-navDropdownMenu{-webkit-flex-direction:row;-ms-flex-direction:row;flex-direction:row;-webkit-box-flex-wrap:wrap;-webkit-flex-wrap:wrap;-ms-flex-wrap:wrap;flex-wrap:wrap;}}@media only screen and (min-width: 1024px){.css-1ni33bu-navDropdownMenu{top:70px;padding:0;-webkit-flex-direction:row;-ms-flex-direction:row;flex-direction:row;-webkit-box-flex-wrap:nowrap;-webkit-flex-wrap:nowrap;-ms-flex-wrap:nowrap;flex-wrap:nowrap;height:auto;left:0;margin:0 3.75rem;width:-webkit-fit-content;width:-moz-fit-content;width:fit-content;}}@media only screen and (min-width: 1220px){.css-1ni33bu-navDropdownMenu{width:-webkit-fit-content;width:-moz-fit-content;width:fit-content;left:15%;}}@media only screen and (min-width: 1440px){.css-1ni33bu-navDropdownMenu{margin:0 7.5rem;}}</style><div aria-hidden="true" class="css-1ni33bu-navDropdownMenu e1n7skr50"><style data-emotion="css w39ba4-navDropdownMenuTextContent">.css-w39ba4-navDropdownMenuTextContent{;;position:relative;}@media only screen and (min-width: 1024px){.css-w39ba4-navDropdownMenuTextContent{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;visibility:visible;-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;width:250px;padding:24px;color:#FFFFFF;}}</style><style data-emotion="css 1a0hm60-navDropdownMenuTextContent">.css-1a0hm60-navDropdownMenuTextContent{margin:0;background-color:#FFF3D9;;;position:relative;}.css-1a0hm60-navDropdownMenuTextContent&gt;span{color:#AB4200;}@media only screen and (min-width: 1024px){.css-1a0hm60-navDropdownMenuTextContent{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;visibility:visible;-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;width:250px;padding:24px;color:#FFFFFF;}}</style><style data-emotion="css 1yp8ytb-text-navDropdownMenuTextContent">.css-1yp8ytb-text-navDropdownMenuTextContent{margin:0;background-color:#FFF3D9;;;position:relative;}.css-1yp8ytb-text-navDropdownMenuTextContent&gt;span{color:#AB4200;}@media only screen and (min-width: 1024px){.css-1yp8ytb-text-navDropdownMenuTextContent{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;visibility:visible;-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;width:250px;padding:24px;color:#FFFFFF;}}</style><p type="siteNav" data-element-page-location="body" data-element-type="text" class="eodbi6c0 css-1yp8ytb-text-navDropdownMenuTextContent efcxqvi0"><style data-emotion="css 197gwwe-text">.css-197gwwe-text{color:#282C33;font-size:24px;font-weight:400;line-height:1.35;margin-top:0;margin-bottom:40px;}</style><span data-element-page-location="siteNav" data-element-type="text" class="css-197gwwe-text efcxqvi0">Create powerful visuals to improve your ideas, projects, and processes.</span></p><style data-emotion="css 17u9elp-navDropdownMenuLinks">.css-17u9elp-navDropdownMenuLinks{position:relative;-webkit-align-self:flex-start;-ms-flex-item-align:flex-start;align-self:flex-start;width:100%;padding:16px 32px 0;}@media only screen and (min-width: 1024px){.css-17u9elp-navDropdownMenuLinks{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;padding:24px;gap:24px;}}@media only screen and (min-width: 1220px){.css-17u9elp-navDropdownMenuLinks{width:unset;}}</style><style data-emotion="css kexb2k-navDropdownMenuLinks">.css-kexb2k-navDropdownMenuLinks{position:relative;-webkit-align-self:flex-start;-ms-flex-item-align:flex-start;align-self:flex-start;width:100%;padding:16px 32px 0;}@media only screen and (min-width: 1024px){.css-kexb2k-navDropdownMenuLinks{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;padding:24px;gap:24px;}}@media only screen and (min-width: 1220px){.css-kexb2k-navDropdownMenuLinks{width:unset;}}</style><div class="css-kexb2k-navDropdownMenuLinks e1n7skr50"><style data-emotion="css 1uizz09-navDropdownMenuGroup">.css-1uizz09-navDropdownMenuGroup{-webkit-box-pack:justify;-webkit-justify-content:space-between;justify-content:space-between;-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;width:calc(100% + 24px);min-width:210px;max-width:100%;}.css-1uizz09-navDropdownMenuGroup&gt;ul:last-of-type{padding-bottom:40px;}@media only screen and (min-width: 1024px){.css-1uizz09-navDropdownMenuGroup{-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;width:210px;max-width:210px;}}</style><style data-emotion="css ic8fvy-navDropdownMenuGroup">.css-ic8fvy-navDropdownMenuGroup{-webkit-box-pack:justify;-webkit-justify-content:space-between;justify-content:space-between;-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;width:calc(100% + 24px);min-width:210px;max-width:100%;}.css-ic8fvy-navDropdownMenuGroup&gt;ul:last-of-type{padding-bottom:40px;}@media only screen and (min-width: 1024px){.css-ic8fvy-navDropdownMenuGroup{-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;width:210px;max-width:210px;}}</style><div class="css-ic8fvy-navDropdownMenuGroup e1n7skr50"><style data-emotion="css 1k658nc">.css-1k658nc{color:#CC4E00;margin:0;padding:0;width:calc(100% - 24px);}.css-1k658nc&gt;hr{border-style:solid;color:#CC4E00;}</style><style data-emotion="css l5a7i3-heading">.css-l5a7i3-heading{color:#CC4E00;margin:0;padding:0;width:calc(100% - 24px);}.css-l5a7i3-heading&gt;hr{border-style:solid;color:#CC4E00;}</style><h3 aria-level="3" id="navDropdownMenuGroupLabel-617-1" role="heading" type="siteNav" data-element-page-location="siteNav" data-element-type="heading" class="e1x0hiuq0 css-l5a7i3-heading ewh6f260">Overview<hr/></h3><style data-emotion="css 1ajam5w-navDropdownMenuGroupUL">.css-1ajam5w-navDropdownMenuGroupUL{margin:0;padding:0;list-style:none;}</style><ul aria-labelledby="navDropdownMenuGroupLabel-617-1" class="css-1ajam5w-navDropdownMenuGroupUL"><style data-emotion="css 3gcyx9-navDropdownMenuGroupLinkContainer">.css-3gcyx9-navDropdownMenuGroupLinkContainer{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;max-width:100%;}</style><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><style data-emotion="css 1gh55vk-subNavLink">.css-1gh55vk-subNavLink{max-width:100%;}</style><style data-emotion="css wstlle-gatsbyLink-subNavLink">.css-wstlle-gatsbyLink-subNavLink{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-text-decoration:none;text-decoration:none;cursor:pointer;border-radius:4px;margin-left:-12px;width:calc(100% + 24px);-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;font-weight:400;background-color:transparent;color:#3A414A;height:42px;margin:0;max-width:100%;}.css-wstlle-gatsbyLink-subNavLink:hover,.css-wstlle-gatsbyLink-subNavLink:focus-visible{font-weight:600;}.css-wstlle-gatsbyLink-subNavLink:focus,.css-wstlle-gatsbyLink-subNavLink:focus-visible{outline:none;position:relative;}.css-wstlle-gatsbyLink-subNavLink:focus::before,.css-wstlle-gatsbyLink-subNavLink:focus-visible::before{content:"";left:-4px;right:-4px;top:-6px;bottom:-6px;border-style:solid;border-width:1px;border-radius:2px;}.css-wstlle-gatsbyLink-subNavLink:focus{outline-color:#CC4E00;}.css-wstlle-gatsbyLink-subNavLink:active,.css-wstlle-gatsbyLink-subNavLink:hover,.css-wstlle-gatsbyLink-subNavLink:focus{border-radius:4px;margin-left:-12px;width:calc(100% + 24px);padding-left:12px;background-color:#F2F3F5;}.css-wstlle-gatsbyLink-subNavLink:active:hover,.css-wstlle-gatsbyLink-subNavLink:hover:hover,.css-wstlle-gatsbyLink-subNavLink:focus:hover,.css-wstlle-gatsbyLink-subNavLink:active:focus-visible,.css-wstlle-gatsbyLink-subNavLink:hover:focus-visible,.css-wstlle-gatsbyLink-subNavLink:focus:focus-visible{font-weight:600;}.css-wstlle-gatsbyLink-subNavLink[aria-disabled="true"]{opacity:0.5;pointer-events:none;cursor:default;}</style><a tabindex="-1" data-element-page-location="body" data-element-type="link" data-link-as-link="true" class="css-wstlle-gatsbyLink-subNavLink egto4nt0" data-link-as-gatsby="true" href="/pages/product"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">Lucidchart overview</span></a></li><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><style data-emotion="css 1bl07os-link-subNavLink">.css-1bl07os-link-subNavLink{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-text-decoration:none;text-decoration:none;cursor:pointer;border-radius:4px;margin-left:-12px;width:calc(100% + 24px);-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;font-weight:400;background-color:transparent;color:#3A414A;height:42px;margin:0;max-width:100%;}.css-1bl07os-link-subNavLink:hover,.css-1bl07os-link-subNavLink:focus-visible{font-weight:600;}.css-1bl07os-link-subNavLink:focus,.css-1bl07os-link-subNavLink:focus-visible{outline:none;position:relative;}.css-1bl07os-link-subNavLink:focus::before,.css-1bl07os-link-subNavLink:focus-visible::before{content:"";left:-4px;right:-4px;top:-6px;bottom:-6px;border-style:solid;border-width:1px;border-radius:2px;}.css-1bl07os-link-subNavLink:focus{outline-color:#CC4E00;}.css-1bl07os-link-subNavLink:active,.css-1bl07os-link-subNavLink:hover,.css-1bl07os-link-subNavLink:focus{border-radius:4px;margin-left:-12px;width:calc(100% + 24px);padding-left:12px;background-color:#F2F3F5;}.css-1bl07os-link-subNavLink:active:hover,.css-1bl07os-link-subNavLink:hover:hover,.css-1bl07os-link-subNavLink:focus:hover,.css-1bl07os-link-subNavLink:active:focus-visible,.css-1bl07os-link-subNavLink:hover:focus-visible,.css-1bl07os-link-subNavLink:focus:focus-visible{font-weight:600;}</style><a tabindex="-1" data-element-page-location="body" data-element-type="link" class="css-1bl07os-link-subNavLink ex6f2cq0" data-link-as-link="true" href="http://www.lucidscale.com"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">Lucidscale</span></a></li><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><a tabindex="-1" data-element-page-location="body" data-element-type="link" data-link-as-link="true" class="css-wstlle-gatsbyLink-subNavLink egto4nt0" data-link-as-gatsby="true" href="/pages/integrations"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">Integrations</span></a></li></ul></div><div class="css-ic8fvy-navDropdownMenuGroup e1n7skr50"><h3 aria-level="3" id="navDropdownMenuGroupLabel-645-2" role="heading" type="siteNav" data-element-page-location="siteNav" data-element-type="heading" class="e1x0hiuq0 css-l5a7i3-heading ewh6f260">Paid plans<hr/></h3><ul aria-labelledby="navDropdownMenuGroupLabel-645-2" class="css-1ajam5w-navDropdownMenuGroupUL"><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><a tabindex="-1" data-element-page-location="body" data-element-type="link" class="css-1bl07os-link-subNavLink ex6f2cq0" data-link-as-link="true" href="https://lucid.app/users/registerLevel?level=individual" rel="nofollow"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">Individual</span></a></li><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><a tabindex="-1" data-element-page-location="body" data-element-type="link" class="css-1bl07os-link-subNavLink ex6f2cq0" data-link-as-link="true" href="https://lucid.app/users/registerLevel?level=team" rel="nofollow"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">Team</span></a></li><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><a tabindex="-1" data-element-page-location="body" data-element-type="link" class="css-1bl07os-link-subNavLink ex6f2cq0" data-link-as-link="true" href="https://lucid.app/users/registerLevel?level=enterprise" rel="nofollow"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">Enterprise</span></a></li></ul></div></div></div></li><li class="css-ktmvxz-navMenuLinkLi"><button aria-expanded="false" aria-haspopup="menu" tabindex="0" data-element-page-location="body" data-element-type="button" data-link-as-button="true" class="css-1v97wxj-button-navDropdownButton e13aab4b0" type="button">Solutions<span class="css-74ojx7-svgIcon-CarotDown"><svg height="100%" viewbox="0 0 14 8" width="100%" xmlns="http://www.w3.org/2000/svg"><path d="M12 1.5L7 6.5L2 1.5" fill="none" stroke="currentcolor" stroke-linecap="square" stroke-linejoin="bevel" stroke-width="1"/></svg></span></button><div aria-hidden="true" class="css-1ni33bu-navDropdownMenu e1n7skr50"><p type="siteNav" data-element-page-location="body" data-element-type="text" class="eodbi6c0 css-1yp8ytb-text-navDropdownMenuTextContent efcxqvi0"><span data-element-page-location="siteNav" data-element-type="text" class="css-197gwwe-text efcxqvi0">Work smarter to save time and solve problems.</span></p><div class="css-kexb2k-navDropdownMenuLinks e1n7skr50"><div class="css-ic8fvy-navDropdownMenuGroup e1n7skr50"><h3 aria-level="3" id="navDropdownMenuGroupLabel-625-1" role="heading" type="siteNav" data-element-page-location="siteNav" data-element-type="heading" class="e1x0hiuq0 css-l5a7i3-heading ewh6f260">By team<hr/></h3><ul aria-labelledby="navDropdownMenuGroupLabel-625-1" class="css-1ajam5w-navDropdownMenuGroupUL"><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><a tabindex="-1" data-element-page-location="body" data-element-type="link" data-link-as-link="true" class="css-wstlle-gatsbyLink-subNavLink egto4nt0" data-link-as-gatsby="true" href="/pages/solutions/remote-collaboration-tools"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">Remote teams</span></a></li><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><a tabindex="-1" data-element-page-location="body" data-element-type="link" data-link-as-link="true" class="css-wstlle-gatsbyLink-subNavLink egto4nt0" data-link-as-gatsby="true" href="/pages/solutions/engineering"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">Engineering</span></a></li><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><a tabindex="-1" data-element-page-location="body" data-element-type="link" data-link-as-link="true" class="css-wstlle-gatsbyLink-subNavLink egto4nt0" data-link-as-gatsby="true" href="/pages/solutions/it"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">IT</span></a></li><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><a tabindex="-1" data-element-page-location="body" data-element-type="link" data-link-as-link="true" class="css-wstlle-gatsbyLink-subNavLink egto4nt0" data-link-as-gatsby="true" href="/pages/solutions/operations"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">Operations</span></a></li><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><a tabindex="-1" data-element-page-location="body" data-element-type="link" data-link-as-link="true" class="css-wstlle-gatsbyLink-subNavLink egto4nt0" data-link-as-gatsby="true" href="/pages/solutions/product/product-management"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">Product</span></a></li><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><a tabindex="-1" data-element-page-location="body" data-element-type="link" data-link-as-link="true" class="css-wstlle-gatsbyLink-subNavLink egto4nt0" data-link-as-gatsby="true" href="/pages/solutions/sales"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">Sales</span></a></li><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><a tabindex="-1" data-element-page-location="body" data-element-type="link" data-link-as-link="true" class="css-wstlle-gatsbyLink-subNavLink egto4nt0" data-link-as-gatsby="true" href="/pages/usecase/education"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">Education</span></a></li></ul></div><div class="css-ic8fvy-navDropdownMenuGroup e1n7skr50"><h3 aria-level="3" id="navDropdownMenuGroupLabel-626-2" role="heading" type="siteNav" data-element-page-location="siteNav" data-element-type="heading" class="e1x0hiuq0 css-l5a7i3-heading ewh6f260">By need<hr/></h3><ul aria-labelledby="navDropdownMenuGroupLabel-626-2" class="css-1ajam5w-navDropdownMenuGroupUL"><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><a tabindex="-1" data-element-page-location="body" data-element-type="link" data-link-as-link="true" class="css-wstlle-gatsbyLink-subNavLink egto4nt0" data-link-as-gatsby="true" href="/pages/solutions/improve-process"><span data-element-page-location="siteNav" data-element-type="text" class="css-5nwafn-text efcxqvi0">Improve processes</span></a></li><li tabindex="-1" class="css-3gcyx9-navDropdownMenuGroupLinkContainer"><a tabindex="-1" data-element-page-location="body" data-element-type="link" 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a,.css-17e15rw-card:focus-within a{outline:none;}.css-17e15rw-card:hover,.css-17e15rw-card:visited,.css-17e15rw-card:focus{color:#3A414A;}@media only screen and (max-width: 768px){.css-17e15rw-card{-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;max-width:100%;margin-bottom:32px;}}</style><div data-element-page-location="hero" data-element-type="card" class="css-17e15rw-card e1uv6weu0"><style data-emotion="css 1cqprdo-link">.css-1cqprdo-link{display:inline-block;-webkit-text-decoration:none;text-decoration:none;cursor:pointer;color:#AB4200;font-weight:400;}.css-1cqprdo-link:focus,.css-1cqprdo-link:focus-visible{outline:none;position:relative;}.css-1cqprdo-link:focus::before,.css-1cqprdo-link:focus-visible::before{content:"";left:-4px;right:-4px;top:-6px;bottom:-6px;border-style:solid;border-width:1px;border-radius:2px;}.css-1cqprdo-link:hover,.css-1cqprdo-link:focus,.css-1cqprdo-link:active{font-weight:500;}.css-1cqprdo-link:hover .hasArrowIcon path,.css-1cqprdo-link:focus .hasArrowIcon path,.css-1cqprdo-link:active .hasArrowIcon path{stroke:#282C33;stroke-width:1px;}.css-1cqprdo-link:hover .hasCarotIcon path,.css-1cqprdo-link:focus .hasCarotIcon path,.css-1cqprdo-link:active .hasCarotIcon path{stroke-width:2px;}.css-1cqprdo-link:hover[data-link-as-button=true],.css-1cqprdo-link:focus[data-link-as-button=true],.css-1cqprdo-link:active[data-link-as-button=true]{font-weight:500;}</style><a data-element-page-location="body" data-element-type="link" class="css-1cqprdo-link ex6f2cq0" data-link-as-link="true" href="https://lucid.app/pricing/lucidchart?type=discovery" rel="nofollow">I want to create my own use case diagram in Lucidchart.</a></div><div data-element-page-location="hero" data-element-type="card" class="css-17e15rw-card e1uv6weu0"><a data-element-page-location="body" data-element-type="link" class="css-1cqprdo-link ex6f2cq0" data-link-as-link="true" href="https://lucid.app/pricing/lucidchart?type=discovery" rel="nofollow">I want to create a use case diagram from a Lucidchart template.</a></div></div></div><style data-emotion="css 5s5p2e">.css-5s5p2e{-webkit-flex:0 1 50%;-ms-flex:0 1 50%;flex:0 1 50%;margin:48px 0;padding:0;margin-right:30%;border:0;border-top:2px solid #F96B13;;}@media only screen and (min-width: 900px){.css-5s5p2e{-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;margin:80px 0;}}@media only screen and (min-width: 900px){.css-5s5p2e{display:block;}}</style><hr id="discovery__top" class="css-5s5p2e"/><style data-emotion="css 1miqs5e">.css-1miqs5e{-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;max-width:100%;text-align:left;margin-bottom:32px;}@media only screen and (min-width: 900px){.css-1miqs5e{-webkit-flex:0 1 29%;-ms-flex:0 1 29%;flex:0 1 29%;max-width:29%;text-align:right;position:relative;}}</style><style data-emotion="css ok6yg2">.css-ok6yg2{-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;max-width:100%;text-align:left;margin-bottom:32px;}@media only screen and (min-width: 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900px){.css-25o5ze-jumplink-tracker{position:-webkit-sticky;position:sticky;top:7.5rem;}.css-25o5ze-jumplink-tracker::before{background-color:transparent;}}</style><div class="css-25o5ze-jumplink-tracker e1n7skr50"><style data-emotion="css 1l95nvm">.css-1l95nvm{margin:0;padding:0;}</style><style data-emotion="css eymuqm-heading">.css-eymuqm-heading{color:#282C33;font-size:24px;font-weight:700;line-height:1;margin-top:0;margin-bottom:24px;margin:0;padding:0;}</style><h2 data-element-page-location="body" data-element-type="heading" class="css-eymuqm-heading ewh6f260">Contents</h2><style data-emotion="css 1kt8mac">.css-1kt8mac{list-style:none;padding:0;margin:0;max-height:calc(100vh - 170px);}</style><ul class="css-1kt8mac"><style data-emotion="css a7hb">.css-a7hb{font-weight:500;margin:24px 0;}</style><li class="css-a7hb"><style data-emotion="css qxrg14">.css-qxrg14{text-align:right;}@media only screen and (max-width: 500px){.css-qxrg14{text-align:left;}}</style><style data-emotion="css k69wux-link">.css-k69wux-link{display:inline-block;-webkit-text-decoration:none;text-decoration:none;cursor:pointer;color:#282C33;font-weight:400;text-align:right;}.css-k69wux-link:focus,.css-k69wux-link:focus-visible{outline:none;position:relative;}.css-k69wux-link:focus::before,.css-k69wux-link:focus-visible::before{content:"";left:-4px;right:-4px;top:-6px;bottom:-6px;border-style:solid;border-width:1px;border-radius:2px;}.css-k69wux-link:hover,.css-k69wux-link:focus,.css-k69wux-link:active{font-weight:500;}.css-k69wux-link:hover .hasArrowIcon path,.css-k69wux-link:focus .hasArrowIcon path,.css-k69wux-link:active .hasArrowIcon path{stroke:#282C33;stroke-width:1px;}.css-k69wux-link:hover .hasCarotIcon path,.css-k69wux-link:focus .hasCarotIcon path,.css-k69wux-link:active .hasCarotIcon path{stroke-width:2px;}.css-k69wux-link:hover[data-link-as-button=true],.css-k69wux-link:focus[data-link-as-button=true],.css-k69wux-link:active[data-link-as-button=true]{font-weight:500;}@media only screen and (max-width: 500px){.css-k69wux-link{text-align:left;}}</style><a data-element-page-location="body" data-element-type="link" class="css-k69wux-link ex6f2cq0" data-link-as-link="true" href="#section_0">What is a use case diagram?</a></li><li class="css-a7hb"><a data-element-page-location="body" data-element-type="link" class="css-k69wux-link ex6f2cq0" data-link-as-link="true" href="#section_1">When to apply use case diagrams</a></li><li class="css-a7hb"><a data-element-page-location="body" data-element-type="link" class="css-k69wux-link ex6f2cq0" data-link-as-link="true" href="#section_2">Use case diagram components</a></li><li class="css-a7hb"><a data-element-page-location="body" data-element-type="link" class="css-k69wux-link ex6f2cq0" data-link-as-link="true" href="#section_3">Use case diagram symbols and notation</a></li><li class="css-a7hb"><a data-element-page-location="body" data-element-type="link" class="css-k69wux-link ex6f2cq0" data-link-as-link="true" href="#section_4">Use case diagram examples</a></li></ul></div></div><style data-emotion="css rez74j">.css-rez74j{-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;max-width:100%;margin-bottom:32px;}@media only screen and (min-width: 900px){.css-rez74j{-webkit-flex:0 1 59%;-ms-flex:0 1 59%;flex:0 1 59%;max-width:59%;}}</style><style data-emotion="css 30lmak">.css-30lmak{-webkit-flex:0 1 100%;-ms-flex:0 1 100%;flex:0 1 100%;max-width:100%;margin-bottom:32px;}@media screen and (min-width: 0){.css-30lmak{margin-top:40px;}}@media screen and (min-width: 900px){.css-30lmak{margin-top:0;}}@media only screen and (min-width: 900px){.css-30lmak{-webkit-flex:0 1 59%;-ms-flex:0 1 59%;flex:0 1 59%;max-width:59%;}}</style><article class="css-30lmak e1n7skr50"><style data-emotion="css 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#A9AFB8;display:block;overflow:auto;font-family:monospace;font-size:1.2rem;white-space:pre;}</style><div class="css-ugi38p e1n7skr50"><p>The purpose of a use case diagram in UML is to demonstrate the different ways that a user might interact with a system. Create a professional diagram for nearly any use case using our <a href="https://www.lucidchart.com/pages/examples/uml_diagram_tool" target="_blank">UML diagram tool</a>.</p> </div><style data-emotion="css aehi7f">.css-aehi7f{line-height:1;font-size:16px;color:#5D646F;font-weight:400;margin-top:0;margin-bottom:32px;}.discovery__header+.css-aehi7f{margin-top:-48px;margin-bottom:64px;}</style><style data-emotion="css y2oudp-text">.css-y2oudp-text{line-height:1;font-size:16px;color:#5D646F;font-weight:400;margin-top:0;margin-bottom:32px;}.discovery__header+.css-y2oudp-text{margin-top:-48px;margin-bottom:64px;}</style><p data-element-page-location="body" data-element-type="text" class="css-y2oudp-text efcxqvi0">4 minute read</p><style data-emotion="css gtdv7p">.css-gtdv7p{border-top:2px solid #6F7681;border-bottom:2px solid #6F7681;padding-top:64px;padding-bottom:16px;margin-top:16px;margin-bottom:48px;}@media only screen and (min-width: 900px){.css-gtdv7p{margin-bottom:120px;}}</style><style data-emotion="css 34w9dh">.css-34w9dh{border-top:2px solid #6F7681;border-bottom:2px solid #6F7681;padding-top:64px;padding-bottom:16px;margin-top:16px;margin-bottom:48px;}@media only screen and (min-width: 900px){.css-34w9dh{margin-bottom:120px;}}</style><div class="css-34w9dh e1n7skr50"><style data-emotion="css 10ib5jr">.css-10ib5jr{margin-bottom:40px;}</style><style data-emotion="css ridryq-text">.css-ridryq-text{color:#282C33;font-size:20px;font-weight:400;line-height:1.35;margin-top:0;margin-bottom:20px;margin-bottom:40px;}</style><p data-element-page-location="body" data-element-type="text" class="css-ridryq-text efcxqvi0">Do you want to create your own UML diagram? Try Lucidchart. It's fast, easy, and totally free.</p><div class="css-0 e1n7skr50"><style data-emotion="css tfnyly">.css-tfnyly{margin:0 0 4rem;}</style><style data-emotion="css 19h2p0q-button">.css-19h2p0q-button{padding:16px 32px;display:inline-block;-webkit-text-decoration:none;text-decoration:none;cursor:pointer;font-size:inherit;line-height:1;-webkit-transition:-webkit-transform 0.15s ease-out;transition:transform 0.15s ease-out;font-weight:500;min-width:-webkit-max-content;min-width:-moz-max-content;min-width:max-content;text-align:center;border-radius:4px;margin:1rem 0;outline:none;position:relative;border-style:solid;border-width:1px;border-color:#282C33;color:#FFFFFF;background-color:#282C33;margin:0 0 4rem;}.css-19h2p0q-button:focus,.css-19h2p0q-button:focus-visible{outline:5px 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0;font-size:1.1875rem;}.css-1vrg24p table.alternating th{border:0;padding-bottom:0;}.css-1vrg24p table.alternating tr:nth-of-type(even){background:#F2F3F5;}.css-1vrg24p table.alternating tr td{padding-bottom:0;border-right:2px solid #FFFFFF;}.css-1vrg24p table.alternating tr td:nth-of-type(2){text-align:right;}.css-1vrg24p table.small-images td img{max-height:80px;}.css-1vrg24p table p{margin:0;}.css-1vrg24p table .table-div &gt;div{width:100%;display:inline-block;}.css-1vrg24p table .table-div img{width:100%;}.css-1vrg24p table .gatsby-image-wrapper{margin:0;}.css-1vrg24p table tr:first-of-type td{padding-top:16px;}.css-1vrg24p table td{padding:4px 24px 24px 0;vertical-align:middle;min-width:10rem;}@media only screen and (max-width: 500px){.css-1vrg24p table td{min-width:0;}}.css-1vrg24p table th{text-align:left;font-weight:500;border-bottom:1px solid #3A414A;padding-bottom:16px;}.css-1vrg24p table.symbol-descriptions tr{vertical-align:top;}.css-1vrg24p table.symbol-descriptions td{padding:0;vertical-align:middle;}.css-1vrg24p table.symbol-descriptions.small td:first-of-type{width:50px;}.css-1vrg24p table.symbol-descriptions.large td:first-of-type{width:80px;}.css-1vrg24p table.symbol-descriptions.xlarge td:first-of-type{width:100px;}.css-1vrg24p table.symbol-descriptions td:first-of-type{width:70px;padding-right:16px;}.css-1vrg24p code{padding:16px 8px;background:#F2F3F5;color:#282C33;border:1px solid #A9AFB8;display:block;overflow:auto;font-family:monospace;font-size:1.2rem;white-space:pre;}</style><div class="css-1vrg24p e1n7skr50"><p>In the Unified Modeling Language (UML), a use case diagram can summarize the details of your system's users (also known as actors) and their interactions with the system. To build one, you'll use a set of specialized symbols and connectors. An effective use case diagram can help your team discuss and represent:</p> <p>Scenarios in which your system or application interacts with people, organizations, or external systems</p> <p>Goals that your system or application helps those entities (known as actors) achieve</p> <p>The scope of your system</p> </ul></div></div></div></div><div class="css-0 e1n7skr50"><div id="section_1" class="discoverySection css-dmbf3v e1n7skr50"><h2 data-element-page-location="body" data-element-type="heading" class="css-fcql6-heading ewh6f260">When to apply use case diagrams</h2><div class="css-9qbegs e1n7skr50"><div class="css-1vrg24p e1n7skr50"><p>A use case diagram doesn't go into a lot of detail—for example, don't expect it to model the order in which steps are performed. Instead, a proper use case diagram depicts a high-level overview of the relationship between use cases, actors, and systems. Experts recommend that use case diagrams be used to supplement a more descriptive textual use case.</p> <p>UML is the modeling toolkit that you can use to build your diagrams. Use cases are represented with a labeled oval shape. Stick figures represent actors in the process, and the actor's participation in the system is modeled with a line between the actor and use case. To depict the system boundary, draw a box around the use case itself.</p> <p>UML use case diagrams are ideal for:</p> <p>Representing the goals of system-user interactions</p> <p>Defining and organizing functional requirements in a system</p> <p>Specifying the context and requirements of a system</p> <p>Modeling the basic flow of events in a use case</p> </div></div></div></div><div class="css-0 e1n7skr50"><div class="css-34w9dh e1n7skr50"><p data-element-page-location="body" data-element-type="text" class="css-ridryq-text efcxqvi0">Diagramming is quick and easy with Lucidchart. Start a free trial today to start creating and collaborating.</p><a data-element-page-location="body" data-element-type="link" data-link-as-button="true" class="e13aab4b0 css-15wabcs-link-button ex6f2cq0" href="https://lucid.app/pricing/lucidchart?type=discovery" rel="nofollow">Create a UML Diagram</a></div><div id="section_2" class="discoverySection css-dmbf3v e1n7skr50"><h2 data-element-page-location="body" data-element-type="heading" class="css-fcql6-heading ewh6f260">Use case diagram components</h2><div class="css-9qbegs e1n7skr50"><div class="css-1vrg24p e1n7skr50"><p>To answer the question, "What is a use case diagram?" you need to first understand its building blocks. Common components include:</p> <p><strong>Actors:</strong> The users that interact with a system. An actor can be a person, an organization, or an outside system that interacts with your application or system. They must be external objects that produce or consume data.</p> <p><strong>System:</strong> A specific sequence of actions and interactions between actors and the system. A system may also be referred to as a scenario.</p> <p><strong>Goals:</strong> The end result of most use cases. A successful diagram should describe the activities and variants used to reach the goal.</p> </div></div></div></div><div class="css-0 e1n7skr50"><div id="section_3" class="discoverySection css-dmbf3v e1n7skr50"><h2 data-element-page-location="body" data-element-type="heading" class="css-fcql6-heading ewh6f260">Use case diagram symbols and notation</h2><div class="css-9qbegs e1n7skr50"><div class="css-1vrg24p e1n7skr50"><p>The notation for a use case diagram is pretty straightforward and doesn't involve as many types of symbols as other UML diagrams. You can use this guide to learn <a href="https://www.lucidchart.com/pages/how-to-draw-a-use-case-diagram-in-UML">how to draw a use case diagram</a> if you need a refresher. Here are all the shapes you will be able to find in Lucidchart:</p> <p><strong>Use cases:</strong> Horizontally shaped ovals that represent the different uses that a user might have.</p> <p><strong>Actors:</strong> Stick figures that represent the people actually employing the use cases.</p> <p><strong>Associations:</strong> A line between actors and use cases. In complex diagrams, it is important to know which actors are associated with which use cases.</p> <p><strong>System boundary boxes:</strong> A box that sets a system scope to use cases. All use cases outside the box would be considered outside the scope of that system. For example, Psycho Killer is outside the scope of occupations in the chainsaw example found below.</p> <p><strong>Packages:</strong> A UML shape that allows you to put different elements into groups. Just as with component diagrams, these groupings are represented as file folders.</p> </ul></div></div></div></div><div class="css-0 e1n7skr50"><div id="section_4" class="discoverySection css-dmbf3v e1n7skr50"><h2 data-element-page-location="body" data-element-type="heading" class="css-fcql6-heading ewh6f260">Use case diagram examples</h2><div class="css-9qbegs e1n7skr50"><div class="css-1vrg24p e1n7skr50"><h3>Book publishing use case diagram example</h3> <p>This use case diagram is a visual representation of the process required to write and publish a book. Whether you’re an author, an agent, or a bookseller, inserting this diagram into your use case scenario can help your team publish the next big hit. <a href="https://lucid.app/lucidchart/editNewOrRegister/a6331f6f-0e33-48d5-bc1d-68f25d05b437" target="_blank">Try this demo template</a> to get started on your own.</p> <h3>Railway reservation use case diagram example</h3> <p>You can adapt this template for any process where a customer purchases a service. With attractive color schemes, text that’s easy to read and edit, and a wide-ranging UML shape library, you’re ready to go! Click to <a href="https://www.lucidchart.com/documents/editNewOrRegister/6641f344-e2ce-4138-a2c8-7fad5ad13fb2/">try out this template</a> on your own.</p> <h3>Chainsaw use case diagram example</h3> <p>Consider this example: A man with a chainsaw interacts with the environment around him. Depending on the situation and the context of the situation, he might fall into one of many different use cases. Does he seem to be on his way to work? Is there anything ominous about the way he is wielding his chainsaw? For example, if he is using the chainsaw in a non-occupational setting, we might have reason to think that he falls within the scope of "scary."</p>