About: Critical system

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A critical system is a system which must be highly reliable and retain this reliability as it evolves without incurring prohibitive costs. There are four types of critical systems: safety critical, mission critical, and . Description

Attributes	Values
rdf:type	Thing
rdfs:label	Critical system (en)
rdfs:comment	A critical system is a system which must be highly reliable and retain this reliability as it evolves without incurring prohibitive costs. There are four types of critical systems: safety critical, mission critical, and . Description (en)
differentFrom	Safety-critical system
dcterms:subject	Engineering failures Maintenance Control engineering Safety Systems engineering Reliability analysis
Wikipage page ID	14437519 (xsd:integer)
Wikipage revision ID	1119597687 (xsd:integer)
Link from a Wikipage to another Wikipage	Mission critical Engineering failures Maintenance Formal methods Reliability engineering Reliability theory Baggage handling system Control engineering Safety Systems engineering Reliability analysis Redundancy (engineering) Verification and validation Factor of safety Reliable system design ERP system Safety critical dbr:Business_critical dbr:Security_critical
sameAs	Critical system Critical system Critical system Critical system
dbp:wikiPageUsesTemplate	dbt:Distinguish dbt:Main dbt:Reflist
has abstract	A critical system is a system which must be highly reliable and retain this reliability as it evolves without incurring prohibitive costs. There are four types of critical systems: safety critical, mission critical, and . Description For such systems, trusted methods and techniques must be used for development. Consequently, critical systems are usually developed using well-tested techniques rather than newer techniques that have not been subject to extensive practical experience. Developers of critical systems are naturally conservative, preferring to use older techniques whose strengths and weaknesses are understood, rather than new techniques which may appear to be better, but whose long-term problems are unknown. Expensive software engineering techniques that are not cost-effective for non-critical systems may sometimes be used for critical systems development. For example, formal mathematical methods of software development have been successfully used for safety and security critical systems. One reason why these formal methods are used is that it helps reduce the amount of testing required. For critical systems, the costs of verification and validation are usually very high—more than 50% of the total system development costs. (en)
prov:wasDerivedFrom	wikipedia-en:Critical_system?oldid=1119597687&ns=0
page length (characters) of wiki page	5159 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Critical_system
is differentFrom of	Safety-critical system
is Link from a Wikipage to another Wikipage of	Mission critical Rochester Electronics Self-organization Standalone program Altran Praxis Byzantine fault Mission control center
is foaf:primaryTopic of	wikipedia-en:Critical_system

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