Question: A database has three record types: (1) for suppliers, a type that contains a unique supplier number, a supplier name, and a supplier address; (2)

A database has three record types: (1) for suppliers, a type that contains a unique supplier number, a supplier name, and a supplier address; (2) for parts, a type that contains a unique part number, a part name, a description, and a location; and (3) for purchases, a type that contains a unique supplier number referencing the supplier number in the supplier record, a part number referencing the part number in the part record, and a quantity. This database has a

Network structure.

Hierarchical structure.

Single flat-file structure.

Relational structure.

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