What is differance unique key and primary key.
- 7 Answers
- 9509 Views
- EDS, I also Faced
- E-Mail Answers
Answer Posted / hema
Unique :: it does not allow duplicate values but allows
null values.
Primary:: Primary does not allow duplicate values as wel as
it dosnt allow null values.
unique+not null==Primary key...
| Is This Answer Correct ? | 6 Yes | 1 No |
Post New Answer View All Answers
What is nvl?
What is tuple in sql?
What is sql in oracle?
what are all different types of collation sensitivity? : Sql dba
What is thread join () in threading?
What is difference between joins and union?
What is sql resultset?
What is fmtonly in sql?
Can function return multiple values in sql?
What are the main features of cursor?
What is the use of double ampersand (&&) in sql queries? Give an example
Can we use ddl statements in stored procedure?
Why commit is not used in triggers?
Which are the different character-manipulation functions in sql?
What is delete command in sql?
