(1) A database object that is associated with a single base table or view and that defines a rule. The rule consists of a set of SQL statements that runs when an insert, update, or delete database operation occurs on the associated base table or view. See also before trigger, delete trigger, insert trigger, trigger activation, trigger activation time, trigger granularity, after trigger, instead of trigger, update trigger.
(2) In database technology, a program that is automatically called whenever a specified action is performed on a specific table or view. See also read trigger.
(3) A mechanism that causes something to begin.
(4) Data values for which AFP Conversion and Indexing Facility (ACIF) searches, to delineate the beginning of a new group of pages. The first trigger is then the anchor point from which ACIF locates the defined index values.
(5) A monitor that specifies one or more standard programs or built-in actions to be executed whenever a certain ClearCase operation is performed.
(6) A condition that signals that a risk factor should be monitored.
(7) A mechanism that detects an occurrence and can cause additional processing in response.
(8) To initiate or reinitiate copying between a pair of virtual disks (VDisks) that have a copy relationship.