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Consider the deletion of record 5 from the file as shown below compare the relative merits of the following techniques

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Consider the deletion of record 5 from the file as shown below compare the relative merits of the following techniques for implementing the deletion:

a. Move record 6 to the space occupied by record 5, and move record 7 to the space occupied by record 6.

b. Move record 7 to the space occupied by record 5.

c. Mark record 5 as deleted, and move norecords.

image

Transcribed Image Text:

record 0 A-102 Perryridge A-305 Round Hill 350 A-218 Perryridge 700 Downtown 500 400 record 1 record 8 A-101 record 3 A-222 | Redwood record 4 700 A-201 | Perryridge 900 A-217 | Brighton record 5 record 6 750 record 7 Downtown 600 A-110

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a Although moving record 6 to the space for 5 and moving reco…View the full answer


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Database System Concepts

Database System Concepts

ISBN: 978-0072554816

4th Edition

Authors: Henry F. Korth, S. Sudarshan

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Question Posted: January 28, 2011 05:54:25
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