20 Foreign Key CASCADE Explained | ON DELETE & ON UPDATE CASCADE in SQL Server

Complete playlist is here: https://www.youtube.com/playlist?list=PLKFKd7UiwVxMiV9Cy7gaF8A_ylx4FuFA9 In this video, you will learn how Foreign Key CASCADE works in SQL Server, including ON DELETE CASCADE and ON UPDATE CASCADE behavior. We will see what happens when you try to delete or update parent table data and how SQL Server automatically updates or deletes related records in the child table using CASCADE. 👉 What you will learn What is Foreign Key CASCADE in SQL Server Difference between NO ACTION and CASCADE How ON DELETE CASCADE works How ON UPDATE CASCADE works Real examples with parent & child tables When CASCADE is dangerous ⚠️ Important Notes CASCADE can delete multiple rows automatically Use carefully in production systems Always test before applying CASCADE constraints foreign key cascade sql server on delete cascade sql server on update cascade sql server sql server foreign key cascade foreign key cascade explained sql cascade delete