What is the main different between Null and NOT Null.
Difference between Primary and Unique Key.
How to Check the database from which application is it
possibe.
Answer Posted / bharanikumar
primary key does not allow null value,
but unique allow only one null value...
www.happylife.in
| Is This Answer Correct ? | 6 Yes | 0 No |
Post New Answer View All Answers
Why do we use the mysql database server?
State the differences between mongodb and mysql.
How show all tables in mysql query?
What is a result set object?
How many types of indexes are there in mysql?
How to get data from mysql in php?
What are the differences between innodb and myisam engines?
What is general log in mysql?
How to get current MySQL version?
What is a mysql view?
In which year mysql created?
What are the advantages of mysql in comparison to oracle?
What is mysql connector used for?
Which is faster innodb or myisam?
How we can get distinct columns values in mysql?