The Relationship Specification has a detailed description of where the documentation is?

On update and On delete, what’s the effect? Where can I find the relevant documentation?

Hi Donie,

It is foreign key’s on update/delete option:

Hi Kit.So

What’s Cascade , Set null , Set default, Restrict, No action?

What is the impact after the selection?

You can refer to database documentation, e.g. MySQL: