Answer / madhu

Report: executable program.it only retrieves data,doesnt
supports data updation.
eventhough we make updations thru open sql,but SAP doesnt
supports.

Module program: online executable program.supports data
updation as we r using Transaction.

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2)what is the differnce between user exits and Badi

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Different between Interface and Abstract classes?

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what are the tools in lsmw?

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What are the Control levels in internal tables?

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