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A relational database system needs to maintain data about the relations, such as the schema of the relations. This is called

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A relational database system needs to maintain data about the relations, such as the schema of the relations. This is called

(a) Metadata

(b) Catalog

(c) Log

(d) Dictionary

I had been asked this question in unit test.

This interesting question is from Data-Dictionary Storage in division Storage and File Structures of Database Management

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Right choice is (a) Metadata

Easiest explanation - Each side of a platter of a disk has a read–write head that moves across the platter to access different tracks.

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