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What is the difference between internal tables and extract datasets? The lines of an internal table always have the similar structure. By using extract datasets, you can ha
Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi
Objectives differentiate DDBMS and conventional DBMS; Describe Network topology for DDBMS; Describe the concepts of horizontal and vertical fragmentation; Descr
Define average latency time. The average latency time of the disk is one-half the time for a full rotation of the disk.
Due date for May 8
Define tuple variable Tuple variable is a type of variable whose domain is the set of all tuples.
define locking in simple language and decribed it
The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
Two-way Associations Mostly, associations are travel in both directions, although not usually with same frequency. There are three approaches for the implementation. In
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