PL/SQL Triggers: BEFORE & AFTER With Examples
BEFORE triggers execute before DML operations (INSERT/UPDATE/DELETE), while AFTER triggers fire after the operation occurs. Examples include setting created_date before insertion & updating updated_date after salary update.
PL/SQL Triggers: BEFORE and AFTER with Examples A trigger in PL/SQL is a special type of stored procedure that is executed automatically in response to specific events on a table or view, such as INSERT, UPDATE, or DELETE operations. Types of Triggers Triggers can be categorized based on timing (before/after), event (insert/update/delete), and level (row or statement). Here's an overview of the types of triggers: 1. Based on Timing BEFORE Trigger: Executes before the triggering DML (Data Manipulation Language) operation (INSERT/UPDATE/DELETE) occurs. These are typically used for va...