What are the before image (BFIM) and after image (AFIM) of a data item? What is the

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What are the before image (BFIM) and after image (AFIM) of a data item? What is the difference between in-place updating and shadowing, with respect to their handling of BFIM and AFIM?

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Fundamentals Of Database Systems

ISBN: 9780133970777

7th Edition

Authors: Ramez Elmasri, Shamkant Navathe

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Question Posted: Feb 16, 2022 07:11 AM

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What are the before image (BFIM) and after image (AFIM) of a data item? What is the

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Before image is the old copy of data item prior to updating and After image is a new value o...View the full answer

Fundamentals Of Database Systems

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