About: Event condition action

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Event condition action (ECA) is a short-cut for referring to the structure of active rules in event driven architecture and active database systems. Such a rule traditionally consisted of three parts: * The event part specifies the signal that triggers the invocation of the rule * The condition part is a logical test that, if satisfied or evaluates to true, causes the action to be carried out * The action part consists of updates or invocations on the local data ECA rules can also be used in rule engines that use variants of the Rete algorithm for rule processing.

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rdf:type	cricketer yago:WikicatRuleEngines yago:Artifact100021939 yago:Device103183080 yago:Engine103287733 yago:Instrumentality103575240 yago:Machine103699975 yago:Motor103789946 yago:Object100002684 yago:PhysicalEntity100001930 yago:Whole100003553
rdfs:label	Event condition action (en)
rdfs:comment	Event condition action (ECA) is a short-cut for referring to the structure of active rules in event driven architecture and active database systems. Such a rule traditionally consisted of three parts: * The event part specifies the signal that triggers the invocation of the rule * The condition part is a logical test that, if satisfied or evaluates to true, causes the action to be carried out * The action part consists of updates or invocations on the local data ECA rules can also be used in rule engines that use variants of the Rete algorithm for rule processing. (en)
dcterms:subject	Databases Rule engines
Wikipage page ID	9519016 (xsd:integer)
Wikipage revision ID	927272967 (xsd:integer)
Link from a Wikipage to another Wikipage	Databases ConceptBase Active database Rete algorithm Rule engines Rule engine Event driven architecture dbr:Rulecore
sameAs	Event condition action Event condition action Event condition action Event condition action
dbp:wikiPageUsesTemplate	dbt:ISBN dbt:Refbegin dbt:Refend dbt:Short_description
has abstract	Event condition action (ECA) is a short-cut for referring to the structure of active rules in event driven architecture and active database systems. Such a rule traditionally consisted of three parts: * The event part specifies the signal that triggers the invocation of the rule * The condition part is a logical test that, if satisfied or evaluates to true, causes the action to be carried out * The action part consists of updates or invocations on the local data This structure was used by the early research in active databases which started to use the term ECA. Current state of the art ECA rule engines use many variations on rule structure. Also other features not considered by the early research is introduced, such as strategies for event selection into the event part. In a memory-based rule engine, the condition could be some tests on local data and actions could be updates to object attributes. In a database system, the condition could simply be a query to the database, with the result set (if not null) being passed to the action part for changes to the database. In either case, actions could also be calls to external programs or remote procedures. Note that for database usage, updates to the database are regarded as internal events. As a consequence, the execution of the action part of an active rule can match the event part of the same or another active rule, thus triggering it. The equivalent in a memory-based rule engine would be to invoke an external method that caused an external event to trigger another ECA rule. ECA rules can also be used in rule engines that use variants of the Rete algorithm for rule processing. (en)
gold:hypernym	Test
prov:wasDerivedFrom	wikipedia-en:Event_condition_action?oldid=927272967&ns=0
page length (characters) of wiki page	2198 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Event_condition_action
is Link from a Wikipage to another Wikipage of	Claire (programming language) ConceptBase Conformance testing Stefano Ceri Data event Kinetic Rule Language ECA Business rules engine Event Condition Action OpenHAB Event correlation
is Wikipage redirect of	Event Condition Action
is Wikipage disambiguates of	ECA
is foaf:primaryTopic of	wikipedia-en:Event_condition_action

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