.....primary key.......... unique key at most one column .....:... any n

What is the difference between primary and unique key

Question Posted / sudhanshu_kmr

5 Answers
8418 Views
CSC, I also Faced
E-Mail Answers

Answer Posted / sudhanshu_kmr

.....primary key.......... unique key

at most one column .....:... any number of column

only unique values........... only unique values

don't accept null........... accept null

Is This Answer Correct ?

3 Yes

2 No

Post New Answer View All Answers

Please Help Members By Posting Answers For Below Questions

all the queries used in sql

2712

What is mysql cursor?

935

How does mysql store binary data?

1012

Write a query to find duplicate rows in table?

947

Why does mysql have so many connections?

944

What is user in mysql?

948

How do I create a schema in mysql?

919

How to create a new table in mysql?

1097

How to connect html form to mysql database using php?

991

can you elaborate on blob and text in mysql? : Mysql dba

938

What is difference between Sql server and MySql database? It may be silly question but i really dont know.

2171

Should I use pdo or mysqli?

960

How to print message in mysql trigger?

1578

What mysql -u john -p command does?

1028

How to Join tables on common columns.

1248