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RULES
1995
Springer

Rule Contexts in Active Databases - A Mechanism for Dynamic Rule Grouping

14 years 3 months ago
Rule Contexts in Active Databases - A Mechanism for Dynamic Rule Grouping
Engineering applications that use Active DBMSs (ADBMSs) often need to group activities into modes that are shifted during the execution of different tasks. This paper presents a mechanism for grouping rules into contexts that can be activated and deactivated dynamically. The ADBMS monitors only those events that affect rules of activated contexts. By dynamic rule grouping the rules to be monitored can be changed during the transactions. This can be contrasted by static rule grouping where the rules are associated with specific objects during the schema definition. A rule is always activated into a previously defined context. The same rule can be activated with different parameters and into several different contexts. Rules in a context are not enabled for triggering until the context is activated. However, rules can be directly activated by activating them into a previously activated context. When rule contexts are deactivated all the rules in that context are disabled from triggering....
Martin Sköld, Esa Falkenroth, Tore Risch
Added 26 Aug 2010
Updated 26 Aug 2010
Type Conference
Year 1995
Where RULES
Authors Martin Sköld, Esa Falkenroth, Tore Risch
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