The null bitmap is used in the variable-length record format to indicate that a certain attribute is empty. In certain odd situations, a tuple may have most or all of its properties set to null. The overhead of a null attribute may be reduced to a single bit by changing the method in which records are represented.

The null bitmap is used in the variable-length record format to indicate that a certain attribute is empty. In certain odd situations, a tuple may have most or all of its properties set to null. The overhead of a null attribute may be reduced to a single bit by changing the method in which records are represented.

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter14: Files And Streams

Section: Chapter Questions

Problem 6RQ

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