Relational Data Model

is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by Edgar F. Codd,[1][2] where all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational model is a relational database.

Relational modelling is the approach of managing data using a structure in a tabular format, resulting in a

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