{"id":523,"date":"2019-08-13T22:46:23","date_gmt":"2019-08-13T20:46:23","guid":{"rendered":"http:\/\/p4dev.hardscrum.com\/?p=523"},"modified":"2026-04-03T19:54:22","modified_gmt":"2026-04-03T17:54:22","slug":"constraints","status":"publish","type":"post","link":"https:\/\/p4dev.hardscrum.com\/en\/constraints\/","title":{"rendered":"Quality Attributes & Constraints"},"content":{"rendered":"

Quality attributes are Non-Functional <\/span><\/span>Requirements<\/span><\/span><\/a> that more or less restrict the Functions and features of a system. <\/span>These are mostly “How” questions, i.e. how fast, how big, how heavy, how expensive, how long-lasting, how robust, how safe? <\/span>These requirements often have to be balanced against each other. <\/span>For this purpose, minimum achievable and desired values \u200b\u200bare often given. <\/span>P4 also requires that these are put in a clear order (in the form of a QA\/C backlog) so that decisions can be made more easily in the event of conflicts.<\/span><\/span><\/p>\n

Constraints are restrictions that must be observed. <\/span>They correspond to Quality Attributes that have only a minimum value. <\/span>The sources of Constraints are often regulatory or legal requirements, as well as product norms and standards*. <\/span>Due to their severely restrictive effect, the Constraints are usually the top priority in the QA\/C backlog.<\/span><\/span><\/p>\n

(see also <\/span><\/span>FURPS<\/span><\/span><\/a> and <\/span><\/span>ISO \/ IEC 9126<\/span><\/span><\/a> )<\/span><\/span><\/p>\n

*) Process norms and standards have a direct impact to the Organization’s Definition of Done (DoD)<\/a>.<\/p>\n

 <\/p>\n

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Further suitable links:<\/p>\n\n\n\n\n
Events<\/td>\nRoles<\/td>\nGroups<\/td>\nArtifacts<\/td>\n<\/tr>\n
Cluster Planning<\/a><\/p>\n

Cluster Sync<\/a><\/p>\n

Cluster Backlog Refinement<\/a><\/p>\n

Cluster Review<\/a><\/td>\n

.<\/span><\/p>\n

Cluster Product Owner<\/a><\/p>\n

Cluster System Engineer<\/a><\/p>\n

.<\/span><\/p>\n

Portfolio Owner<\/a><\/p>\n

Portfolio Architect<\/a><\/td>\n

Team Product Owner Group<\/a><\/p>\n

Team System Engineer Group<\/a><\/p>\n

.<\/span><\/p>\n

Cluster Product Owner Group<\/a><\/p>\n

Cluster System Engineer Group<\/a><\/td>\n

Inspectable Results<\/a><\/p>\n

Team DoD<\/a><\/p>\n

.<\/span><\/p>\n

Usable Knowledge<\/a> & System Increment<\/a><\/p>\n

Cluster DoD<\/a><\/p>\n

.<\/span><\/p>\n

Systems & Applications<\/a><\/p>\n

System Platforms & Variants<\/a><\/p>\n

Organisation DoD<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0<\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"Quality attributes are Non-Functional Requirements that more or less restrict the Functions and features of a system. These are mostly “How” questions, i.e. how fast, how big, how heavy, how expensive, how long-lasting, how robust, how safe? These requirements often have to be balanced against each other. For this purpose, minimum achievable and desired values…","protected":false},"author":3,"featured_media":2362,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[20],"tags":[385,386,539],"translation":{"provider":"WPGlobus","version":"2.10.10","language":"en","enabled_languages":["de","en"],"languages":{"de":{"title":true,"content":true,"excerpt":false},"en":{"title":true,"content":true,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/p4dev.hardscrum.com\/en\/wp-json\/wp\/v2\/posts\/523"}],"collection":[{"href":"https:\/\/p4dev.hardscrum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/p4dev.hardscrum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/p4dev.hardscrum.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/p4dev.hardscrum.com\/en\/wp-json\/wp\/v2\/comments?post=523"}],"version-history":[{"count":18,"href":"https:\/\/p4dev.hardscrum.com\/en\/wp-json\/wp\/v2\/posts\/523\/revisions"}],"predecessor-version":[{"id":5419,"href":"https:\/\/p4dev.hardscrum.com\/en\/wp-json\/wp\/v2\/posts\/523\/revisions\/5419"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/p4dev.hardscrum.com\/en\/wp-json\/wp\/v2\/media\/2362"}],"wp:attachment":[{"href":"https:\/\/p4dev.hardscrum.com\/en\/wp-json\/wp\/v2\/media?parent=523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/p4dev.hardscrum.com\/en\/wp-json\/wp\/v2\/categories?post=523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/p4dev.hardscrum.com\/en\/wp-json\/wp\/v2\/tags?post=523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}