what is difference between primary key and Unique

8 Answers  

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What is Query Execution Plan? How does it help optimize or tune a database driven application?

2 Answers   Accenture, Polaris,

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How do we get current date in SQL Server 2000, Oracle, MS Access?

13 Answers  

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Can we have more than one NULL in a column having unique constraint?

12 Answers   247Customer,

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What are truncate options available in sql server? : sql server database administration

0 Answers  

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Call by value and call by reference in procedure and function, with NOCOPY.

0 Answers   Nagarro,

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What is NOT NULL Constraint in sql server 2012?

0 Answers   CDC,

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What is triggers and its types?

0 Answers  

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What are the different Authentication modes in SQL Server and how can you change authentication mode?

0 Answers  

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Write a sql query to get zero records from a table having n number of records?

0 Answers   TCS,

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What is your recommendation for a query running very slow? : sql server database administration

0 Answers  

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What happens when transaction log is full?

0 Answers  

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