{"id":589,"date":"2016-07-30T22:37:03","date_gmt":"2016-07-30T20:37:03","guid":{"rendered":"http:\/\/www.medtech-ingenieur.de\/?p=589"},"modified":"2021-08-06T14:57:44","modified_gmt":"2021-08-06T13:57:44","slug":"anforderungen-vs-architektur-das-sysmod-zigzag-pattern","status":"publish","type":"post","link":"https:\/\/medtech-ingenieur.de\/en\/anforderungen-vs-architektur-das-sysmod-zigzag-pattern\/","title":{"rendered":"Requirements vs. Architecture \u2013 The SYSMOD ZIGZAG Pattern"},"content":{"rendered":"<p>How are requirements and architecture related? What is in the requirements and what is in the architecture? And how do architecture and requirements interact? In this article, I describe this relationship and introduce the SYSMOD ZIGZAG pattern.<\/p>\n<h3>What and how?<\/h3>\n<p>When it comes to system requirements, the primary question is always &quot;What does the system do?&quot; I&#039;d like to illustrate this using a simple example of a blood pressure monitor. A requirement could be, for example, the following: The system should be able to measure and display systolic and diastolic blood pressure on the upper arm. The requirement clearly states what the system does. How it does this is irrelevant to this requirement. Testing against the requirement verifies whether blood pressure is measured and displayed. It does not verify whether the correct components have been installed.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-590 size-full aligncenter\" src=\"https:\/\/www.medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/WasWie.png\" alt=\"Was und Wie? Zusammenhang zwischen Anforderungen und Architektur\" width=\"686\" height=\"416\" srcset=\"https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/WasWie.png 686w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/WasWie-300x182.png 300w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/WasWie-100x61.png 100w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/WasWie-150x91.png 150w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/WasWie-200x121.png 200w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/WasWie-450x273.png 450w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/WasWie-600x364.png 600w\" sizes=\"auto, (max-width: 686px) 100vw, 686px\" \/><\/p>\n<p>The first step is to clarify how requirements and architecture differ. The requirements describe what the system does, and the architecture describes how it does it. The architecture results in new requirements for the system. In our example, blood pressure measurement is implemented using a cuff, a pump, two valves, and a pressure sensor.<br \/>\n<div class=\"table-scrollable\">\r\n<table style=\"min-width: 300px;\">\r\n<tbody>\r\n<tr>\r\n<td colspan=\"2\" bgcolor=\"#FFFFFF\">\r\n<h4><strong><center>Your contact person:<\/strong><\/center><\/h4>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center;\" bgcolor=\"#f9f9f9\"><strong><span style=\"color: #2c2ccc;\">Dipl.-Ing. Goran Madzar<\/span><\/strong><span style=\"color: #2c2ccc;\">, Partner, Senior Systems Engineer\u00a0<\/span><br \/>E-mail: <a href=\"mailto:madzar@medtech-ingenieur.de\">madzar@medtech-ingenieur.de<\/a> <br \/>Phone:\u00a0\u00a0<a href=\"tel:+499131691240\">+49 9131 691 240<\/a><\/td>\r\n<td style=\"background-image: url('https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2018\/08\/madzar_goran_220px-100x100.png'); background-repeat: no-repeat; background-position: center; background-size: cover;\" bgcolor=\"#f9f9f9\" width=\"100px\">\u00a0<\/td>\r\n<\/tr>\r\n<tr>\r\n<td colspan=\"2\" bgcolor=\"#FFFFFF\"><center><p>Do you need support with the development of your medical device? We&#039;re happy to help! MEDtech Ingenieur GmbH offers hardware development, software development, systems engineering, mechanical development, and consulting services from a single source. Contact us.<\/p>\r\n<center><a class=\"large blue button\" href=\"https:\/\/medtech-ingenieur.de\/en\/kontakt\/\">make contact<\/a><\/center><br\/><\/center><\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div><\/p>\n<h3>The ZIGZAG Pattern<\/h3>\n<p>This relationship is represented by the SYSMOD ZIGZAG pattern. Let&#039;s look at the example of the blood pressure monitor.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-593 size-full\" src=\"https:\/\/www.medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZag-1.png\" width=\"911\" height=\"529\" srcset=\"https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZag-1.png 911w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZag-1-300x174.png 300w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZag-1-768x446.png 768w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZag-1-100x58.png 100w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZag-1-150x87.png 150w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZag-1-200x116.png 200w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZag-1-450x261.png 450w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZag-1-600x348.png 600w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZag-1-900x523.png 900w\" sizes=\"auto, (max-width: 911px) 100vw, 911px\" \/><\/p>\n<p>The requirement to measure blood pressure leads to an architecture with a pneumatic unit. This architecture with a pneumatic unit creates new requirements for the system. In this example, the overpressure shutdown, which is implemented by three architectural elements. The logical steps in the ZIGZAG pattern are &quot;Zig&quot; from the requirement to the architecture, &quot;Zag&quot; from the architecture to the new requirement, and &quot;Zig&quot; back to the architecture. This pattern can also be applied in the V-model.<\/p>\n<p><a href=\"https:\/\/medtech-ingenieur.de\/en\/anforderungen-vs-architektur-das-sysmod-zigzag-pattern\/\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-595\" src=\"https:\/\/www.medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZagV.png\" alt=\"ZigZag Muster im V-Modell\" width=\"655\" height=\"523\" srcset=\"https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZagV.png 655w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZagV-300x240.png 300w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZagV-100x80.png 100w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZagV-150x120.png 150w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZagV-200x160.png 200w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZagV-450x359.png 450w, https:\/\/medtech-ingenieur.de\/wp-content\/uploads\/2016\/07\/ZigZagV-600x479.png 600w\" sizes=\"auto, (max-width: 655px) 100vw, 655px\" \/><\/a>In the figure above, the ZIGZAG pattern is shown on the left side of the V-model. This pattern is absolutely useful and independent of any tool or modeling language. In my opinion, understanding this pattern helps to better design requirements and architecture and manage their interactions.<\/p>\n<p>Today I would like to end my article with a quote that also fits well with system architects :-)<\/p>\n<blockquote><p>&quot;I am not a cynic or a skeptic, but an optimist. That is the most important prerequisite for becoming an architect.&quot; (Daniel Libeskind)<\/p><\/blockquote>\n<p>Best regards<br \/>\nGoran Madzar<\/p>","protected":false},"excerpt":{"rendered":"<p>Wie h\u00e4ngen Anforderungen und Architektur zusammen? Was steht in den Anforderungen und was in der Architektur? Und wie wechselwirken Architektur und Anforderungen? In diesem Artikel beschreibe ich diesen Zusammenhang und stelle das SYSMOD ZIGZAG Pattern vor. Was und Wie? Bei den Anforderungen an ein System steht immer die Frage &#8222;Was tut das System?&#8220; im Vordergrund. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":595,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,7],"tags":[39,94,27,40,56],"class_list":["post-589","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dokumentation","category-systemarchitekten","tag-anforderungen","tag-architektur","tag-dokumentation","tag-requirements","tag-systemingenieur","post-wrapper","thrv_wrapper"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Anforderungen vs. Architektur - Das SYSMOD ZIGZAG Pattern - MEDtech Ingenieur GmbH<\/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:\/\/medtech-ingenieur.de\/en\/anforderungen-vs-architektur-das-sysmod-zigzag-pattern\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Anforderungen vs. Architektur - Das SYSMOD ZIGZAG Pattern - MEDtech Ingenieur GmbH\" \/>\n<meta property=\"og:description\" content=\"Wie h\u00e4ngen Anforderungen und Architektur zusammen? Was steht in den Anforderungen und was in der Architektur? Und wie wechselwirken Architektur und Anforderungen? In diesem Artikel beschreibe ich diesen Zusammenhang und stelle das SYSMOD ZIGZAG Pattern vor. Was und Wie? Bei den Anforderungen an ein System steht immer die Frage &#8222;Was tut das System?&#8220; im Vordergrund. 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