How many null values we can have in a unique key field in sql server?
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What is the difference between in and exists. Ex: select * from emp where empno in(....) and select * from emp where empno exists(....) What is the difference between a Join and Union and Union and UnionAll.
What is co-related sub query?
What are SSL and TSL protocols?
What is SQL Server?
Can multiple columns be used in sql group by clause in ms sql server?
What is a periodical index?
Explain the truncate command?
Do you know what is normalization of database? What are its benefits?
What is coalesce in sql server?
What is optimistic concurrency?
how to write test cases for testing databases,especially for testing and writing test cases for stored procedures.any real time database testers.please answer me.
What is single-user mode?
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