A database is a storage model in which common entities are stored within separate tables that use unique key identifiers to build relationships among these entities. a. network b. hierarchical c. flat d. relational

Relational Database

Explanation:

The above description explains the relational database. Hence, from the list of given options, option D answers the question.

Analyzing each options:

Flat database makes use of text files to store data

Hierarchical database makes use of tree like structure

Network database makes use of nodes

Only the relational database database organize data in form of table

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