Triggers can be defined for INSERT, DELETE, and UPDATE operations on system-time tables. Note the following:
- Actions are triggered only for actions on open rows, that is, rows that have not been logically deleted from the table.
- Defined actions cannot reference the component beginning or ending bound TIMESTAMP columns of the SYSTEM_TIME derived period column.
- The DELETE or UPDATE operation that triggers an action can be unqualified or can include the temporal FOR PORTION OF qualifier.
- Trigger actions on ANSI temporal tables can be qualified with FOR PORTION OF.