Computer Science for IGCSE & O level - Databases (Section 1 - No. 42)

What is a data type used for in a database?
To specify the format of the user interface.
To define the type of validation rule.
To determine the structure of the database.
To classify how data is stored and displayed.

Explanation

Data types determine how data is stored and what operations can be performed on it (e.g., text, numbers, dates).

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