Define an operator that a relational algebra does not have, Database Management System

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Define an operator that a Relational Algebra does not have

Ans: Relational Algebra does not have Aggregation operators.

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For each 1: n relationship type R involving two entities E1 and E2, we recognize the entity type (say E1) at the n-side of the relationship type R and contain primary key of the en

Strong entity set and weak entity set, Strong entity set and weak entity se...

Strong entity set and weak entity set? Strong entity set and weak entity set: A strong entity set has a primary key. All tuples in the set are distinguishable through that key.

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Graphical user interface tools, These are interactive interfaces, graphical...

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Self-join, Self-Join: In a self join a table is joined with itself. Let ...

Self-Join: In a self join a table is joined with itself. Let consider the following sample partial data of EMP table EMPNO ENAME MGRID

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How relational calculus is different from relational algebra, How Relationa...

How Relational Calculus is different from Relational Algebra? What do understand by TRC queries and DRC queries? Ans: Relational calculus contain two calculi, the tuple relati

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