why db2 is called as universal database?what is the storage capacity of db2v9 n what are the advantages of db2

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Is schema the same as database?

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What are concurrency issues?

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What is the database descriptor?

2 Answers  

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My SQL is not performing well. Describe how will you fine tune it?

1 Answers   Accenture,

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What are the contents of a DCLGEN?

4 Answers   MetLife,

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SET is the ANSI standard for variable assignment, SELECT is not. SET can only assign one variable at a time, SELECT can make multiple assignments at once. If assigning from a query, SET can only assign a scalar value. If the query returns multiple values/rows then SET will raise an error. SELECT will assign one of the values to the variable and hide the fact that multiple values were returned (so you'd likely never know why something was going wrong elsewhere - have fun troubleshooting that one) When assigning from a query if there is no value returned then SET will assign NULL, where SELECT will not make the assignment at all (so the variable will not be changed from it's previous value) As far as speed differences - there are no direct differences between SET and SELECT. However SELECT's ability to make multiple assignments in one shot does give it a slight speed advantage over SET.

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How to create db2 table in mainframe?

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What is copy book?

1 Answers   Thomson Reuters,

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What is schema in db2?

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What is the COBOL picture clause of the following DB2 data types: DATE, TIME, TIMESTAMP?

3 Answers  

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What are some SQL aggregates and other built-in functions?

2 Answers  

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