Discussion
Which level of Abstraction describes how data are stored in the data base ?
Answer: A
The physical level of abstraction describes how the data are actually stored in the data base, in terms of files, blocks and index structures. The logical level describes what data are stored and the relationships among them, and the view level describes only the part of the data base that a user sees. 'Abstraction level' is not one of the three levels. The keyed answer is the physical level.
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