Introduction to Triggers
Explore PostgreSQL triggers to understand how to execute procedures automatically on database events like insert, update, and delete. Learn about trigger timing options, procedural languages supported, and how to handle concurrency with event-based processing.
We'll cover the following...
We'll cover the following...
When a cache refresh policy of minutes isn’t advisable, a common approach is to implement event-based processing. Most SQL systems, including PostgreSQL, implement an event-based facility called a trigger.
Procedures and triggers
A trigger allows registering a procedure to be executed at a specified time when an event is produced. The timing can be before ...