Answer Posted / vignesh lakshmirajan
ONE COLUMN MAY HAVE N NUMBER OF COLUMNS,.. THERE IS NO RESTRICTION IN THAT.. BUT A TABLE SHOULD CONTAIN ONLY ONE PRIMARY KEY, BUT IT MAY HAVE N NUMBER OF UNIQUE KEYS.
| Is This Answer Correct ? | 12 Yes | 3 No |
Post New Answer View All Answers
Is there any difference between the primary key and unique key?
What is the meaning of resultset type_scroll_insensitive?
last function used in MS Access to convert sql what function will use in sql
Explain what are sparse columns?
How to create median function?
What are cursors and when they are useful?
How to rebuild the master database?
What do you mean by an execution plan? Why is it used? How would you view it?
What are the different authentication modes in sql server? How can it be changed?
What is acid db?
What is #temp and @table variable in SQL server?
How to specify the collation for a character data type in ms sql server?
How do I clean up sql server transaction log?
Can we perform backup restore operation on tempdb? : sql server database administration
What are the disadvantages of primary key and foreign key in SQL?