1.0ArchiMetric Frenchhttps://www.archimetric.com/frarchimetric@visual-paradigm.comhttps://www.archimetric.com/fr/author/archimetricvisual-paradigm-com/rich600338<blockquote class="wp-embedded-content" data-secret="UZDQtOfD5A"><a href="https://www.archimetric.com/fr/what-is-sequence-diagram/">Qu’est-ce qu’un diagramme de séquence</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.archimetric.com/fr/what-is-sequence-diagram/embed/#?secret=UZDQtOfD5A" width="600" height="338" title="« Qu’est-ce qu’un diagramme de séquence » — ArchiMetric French" data-secret="UZDQtOfD5A" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.archimetric.com/fr/wp-includes/js/wp-embed.min.js /* ]]> */ </script> https://www.archimetric.com/fr/wp-content/uploads/sites/8/2026/03/sequence-diagram.png1170658A sequence diagram is an interaction diagram that emphasizes the time-ordering of messages. It depicts the objects and classes involved in the scenario and the sequence of messages exchanged between the objects needed to carry out the functionality of the scenario. Typically, you'll use one sequence diagram to specify a use case's main flow, and variations of that diagram to specify a use case's exceptional flows.