PL/SQL Statement Level Triggers
Statement-level triggers are said to be specialized PL/SQL code blocks that execute once per triggering DML statement like, Insert, Update, and Delete on any table. How about a glimpse of its structure?
Syntax:
CREATE [OR REPLACE] TRIGGER trigger_name //start
{BEFORE | AFTER } triggering_event
ON table_name
[FOLLOWS | PRECEDES another_trigger]
[ENABLE / DISABLE ]
[WHEN condition]
DECLARE
declaration statements
BEGIN
executable statements
EXCEPTION
exception_handling statements
END;
PL/SQL Statement level Triggers
Statement-level triggers in Oracle databases execute actions for each transaction, responding to various database events like DML and DDL statements, system events, and user interactions. They act as programmed responses to specific table events, enhancing database management and automation.
Stored as named PL/SQL blocks, triggers execute automatically upon occurrence of a predefined event, crucial for efficient database operation.
In this article, we will cover PL/SQL Statement level Triggers syntax, their importance, characteristics, common use cases, and examples, illustrating their role in Oracle database management.
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