adspace


What is the diff. bwt. primary key and unique key?

Answer Posted / janhvee

diff. between primary key and unique is unique key can be
null but primary key can't be null.

one table can have only one primary key but unique key can
be multiple keys

Is This Answer Correct ?    17 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is current version of mysql?

1084


Which statement is used in a select query for partial matching?

1247


How to Change a users password from unix shell.

1223


What is the current mysql version?

1105