How to create a trigger to update on same table in MySQL or Oracle - Quora
oracle - SQL developer: How to make log output from a trigger? - Stack Overflow
CREATE TRIGGER
CREATE TRIGGER Statement
oracle - Create a PL/SQL Trigger to display the message “NEW EMPLOYEE DETAILS INSERTED”, whenever a new record is inserted into Employee table - Stack Overflow
After Trigger - PL/SQL Program
6 Using Triggers
Oracle Database Trigger | PPT
Oracle Trigger After Insert Example | PDF | Pl/Sql | Information Retrieval