Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / ashis kumar jena
A primary key is one which uniquely identifies a row
of a table.
This key does not allow null values and also
does not allow duplicate values.
Each table should have a primary key, and each table can
have only one primary key.
| Is This Answer Correct ? | 16 Yes | 2 No |
Post New Answer View All Answers
Explain isolation levels. : Transact sql
what are string data types? : Sql dba
What is sql character function?
How do you clear the screen in sql?
What is interval partition?
What is the difference between sql, mysql and sql server?
What does desc stand for?
what is msql? : Sql dba
How do you optimize a stored procedure query?
What is the purpose of the sql select top clause?
How to generate a salary slip like jan 1000 1000 feb 1000 2000 ... dec 1000 12000
What is clustered index in sql?
How do I run sql?
What are sql*plus environment variables?
How can you maintain the integrity of your database on instances where deleting an element in a table result in the deletion of the element(s) within another table?
