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Triggers in Postgres

Semab Tariq explains how triggers work in PostgreSQL:

In the dynamic world of relational databases, where precision and efficiency are paramount, PostgreSQL emerges as a robust solution. At the heart of its functionality lies a feature that adds a layer of intelligence and automation to database operations – Triggers.

What exactly are triggers? They are predefined actions that the database executes automatically when a specific event occurs, such as an insertion, update, or deletion of records in a table. Think of triggers as the silent guardians behind the scenes, ensuring data integrity, enforcing business rules, and automating repetitive tasks.

These trigger examples also work for SQL Server, and my advice for triggers probably would be the same between platforms: use triggers sparingly because they can cause performance problems and it can be easy to forget that they exist when you’re troubleshooting why some operation isn’t working the way you expect.