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GIF reference taken from giphy.com.
This article is half-done without your Comment! *** Please share your thoughts via Comment ***
I request to all Database Professionals,
“Please share your experience through the comments”
GIF reference taken from giphy.com.
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.