Comments on: Laugh@dbrnd.gif: Should a Database Table always have a Primary Key?

By: Siva Prasad

Siva Prasad — Tue, 21 Jun 2016 07:07:03 +0000

it’s recommended to have a primary key

By: Anvesh Patel

Anvesh Patel — Tue, 21 Jun 2016 06:48:24 +0000

In reply to Jaspreet. Nice comment Jaspreet! I am agree with you.

By: Jaspreet

Jaspreet — Tue, 21 Jun 2016 05:15:58 +0000

I think that depend for what purpose you are creating table for. If 90% of times you will be firing query for taking data from the table which is about more than 20% of total data in table then I think primary key wont be used.
For inserts, if primary key is not available then no constraint will be checked while inserting which will speedup the insert.
But having no primary key will have effect on updates and deletes.

By: Ahmed ANees Memon

Ahmed ANees Memon — Mon, 20 Jun 2016 11:02:59 +0000

mostly require a primary key

By: Nabeel Shahzad

Nabeel Shahzad — Mon, 20 Jun 2016 11:02:08 +0000

its choice ,, not always

By: Rafael Boszko

Rafael Boszko — Mon, 20 Jun 2016 11:00:02 +0000

I was trying to think in any case, but ateh even in relational tables where the indexation ~ ~ is not important, eh good use key only between the columns that ends up being the pk anyway XD