Proposed by E.F. Codd in early seventies.
.. Most of the modern DBMS are relational.
.. Simple and elegant model.
.. Led to the development of a theory of data
.. Dependencies and database design.
.. Relational algebra operations –
Crucial role in query optimization & execution.
.. Led to the development of database standard SQL
By Prof. P.Sreenivasa Kumar, IIT Chennai
view / download: DB-RelationalModel (size 219 KB)