Answer Posted / sheethal

thanks a lot....

What are packages in db2?

975

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Name the lockable units in DB2?

1075

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Define db2 and its databases?

1007

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What action db2 takes when a program aborts in the middle of a transaction?

1093

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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.

2595

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what is utility for parm lib

2311

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Is it possible to alter a table – for example adding a column, when another user is accessing or updating some columns?

1033

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What is a buffer in memory?

1008

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What are db2 objects?

1004

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What is clone table?

1000

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What is ibm db2 database?

953

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What is rebind in db2?

1004

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What is load utility in db2?

1132

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Why db2 is called db2?

974

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What does db2 plan contain?

966

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