How do I update FK in a table on insert or update simultaneously.

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I have constructed a DB with 10 tables on it and I want the PK which are FK in other tables to auto update upon inserting, updating, deleting data into them. do I use 'TRIGGER' or 'ON CASCADE'. How does one achieve filling in one line of one table but at the same time the FK's fill in same time?

Posted 11-Oct-15 3:18am

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[no name] 11-Oct-15 9:27am

I would suggest "ON CASCADE". Keep in mind this can end in very heavy Operation in case you have "millions" of Details. Usually a good strategy would be "PRIMARY KEY" can not Change, but I know in Praxis this is sometimes hard...

John C Rayan 12-Oct-15 7:57am

As 0x01AA mentioned , if you are changing your PK then you are doing something very wrong.

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Daniel Miller · Answer 1 · 2015-10-25T14:03:00

Solution 1

I recommend using UPDATE CASCADE and DELETE CASCADE to maintain referential integrity. Here is a helpful resource on the topic:

https://www.mssqltips.com/sqlservertip/2743/using-delete-cascade-option-for-foreign-keys/[^]

Posted 25-Oct-15 14:03pm

Daniel Miller