A data dictionary is a special file that contains

The width of all fields in all files
The data type of all fields in all file
The name of all fields in all files
All of the above

Correct Answer: All of the above

Explanation:

A data dictionary is a special file that contains a set of information describing the contents, format, and structure of a database and the relationship between its elements, used to control access to and manipulation of the database.

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