Both direct access and sequential access may be used to get information from memory. These two means of entry are equally feasible. If you had immediate access to today's most popular electronics, what would you do with them? What will we do if we need to modify data that has been written into a device that only supports sequential access?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Both direct access and sequential access may be used to get information from memory. These two means of entry are equally feasible. If you had immediate access to today's most popular electronics, what would you do with them? What will we do if we need to modify data that has been written into a device that only supports sequential access?

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