Explain about aggregation?

944

I'm currently placed in Lahore Pakistan. where can i do Microsoft certification. let me know the best place to do.?

1751

How can I read a binary data file properly?

1093

what is bms system and how to work it

1662

What is @@rowcount in sql?

955

What is LazyOutputFormat in Hadoop?

462

What are two types of data in a database environment?

860

What are the different modes available for object spying?

594

What is addition reaction?

1054

How many types of api testing are there?

1098

Where to do genomic base composition analysis?

2049

How can you force the optimizer to use a particular index?

1011

Are you willing to relocate to some other place?

1046

How to insert and delete a row programmatically? (new feature in JDBC 2.0)

942

What are difference between class selector and id selector?

547