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Which disk data does FILES table in INFORMATION_SCHEMA store?

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Which disk data does FILES table in INFORMATION_SCHEMA store?

(a) NDB

(b) NBD

(c) NBK

(d) NCD

I have been asked this question in an online interview.

I would like to ask this question from Obtaining Database Metadata topic in section Using SQL to Manage Data of MySQL

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Correct option is (a) NDB

For explanation I would say: The ‘INFORMATION_SCHEMA’ is a method to access information about the databases and its objects known as metadata. It has various tables that can be viewed with ‘SHOW’ statement.

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