What is differance unique key and primary key.
Answer Posted / l..l.n.reddy
PRIMARY KEY:- only one primary key in a table.
UNIQUE KEY:- One or more unique key in a table.
| Is This Answer Correct ? | 1 Yes | 3 No |
Post New Answer View All Answers
What is the need of merge statement?
What is the use of double ampersand (&&) in sql queries? Give an example
What is crud stand for?
What are the packages in pl sql?
Which are the different case manipulation functions in sql?
Define SQL and state the differences between SQL and other conventional programming Languages?
How sql query is executed?
What is pls_integer in pl sql?
what are local and global variables and their differences? : Sql dba
What is a natural join?
Explain correlated query work?
Can a varchar be a primary key?
Difference between table function and pipelined function?
How do I partition a table in sql?
What is the meaning of disabling a trigger?