A trigger is PL/SQL code that is implicitly executed when inserting, updating, or deleting data in a table. For information about triggers, see the Oracle7 Server Concepts and the Oracle7 Server Application Developer's Guide.
The following figure illustrates the Trigger object list.
Figure 7 - 2. Trigger Object List
Trigger | Trigger owner and trigger name. |
Table | Owner and name of table on which the trigger is defined. |
Type | When the trigger fires: Before/After Statement or Before/After Each Row. |
Event | Type of statements that fire the trigger: Insert, Update, and/or Delete. |
Status | Status of the trigger: Enabled or Disabled. |
When | Condition that must be true for the trigger to fire (only applies to row triggers). |