How to Add Auto Increment with Trigger in Oracle? [ Web App with Oracle Apex ]
In this Oracle APEX tutorial, you will learn the classic method for implementing an auto-increment feature for a primary key column in your Oracle database table using a Sequence and a Trigger. This is essential for ensuring unique, sequential IDs for new rows.
What You Will Learn in This Video:
Understand the fundamental difference and purpose of Sequences and Triggers in Oracle Database.
Write the SQL/PLSQL code to create a Sequence that generates unique incremental values.
Write the SQL/PLSQL code to create a BEFORE INSERT Trigger that automatically calls the sequence and assigns the next value to the primary key column.
Test the auto-increment functionality using a simple INSERT statement in SQL Commands.