Holds information about a particular type of data and is designated by a three-letter abbreviation or INI.

• A. Master Files
• B. Records
• C. Items
• D. Facility Structure

Answer: (A)

Master files are the containers that store information about a specific kind of data in a system. They define the domain of data and hold the canonical attributes for that type, and they’re often identified by a short three-letter code or an INI to indicate which data type they represent. This makes it clear what data the file governs, separate from the individual entries inside it. For example, a product master file would contain the essential product descriptors and identifiers, while a customer master file would hold key customer details—each file representing a distinct data type. This concept contrasts with a single record, which is just one row of data within a file, or with items or facility structures, which refer to objects or physical/logical layouts rather than the data type itself. The three-letter abbreviation or INI supports quick reference and consistent data governance across processes.