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Database Models and Relational Algebra – Part 5

THE RELATIONAL CALCULUS In relational calculus, a query is conveyed as a formulary plan which contains a number of variables as well as an expression concerning these variables. It is up to the Database Management System (DBMS) to convert these non – technical queries into the same, well-organized, effective and procedural queries. The concept of relational calculus was first planned...

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