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What is Unary Operations in Relational Algebra about?

This document provides an overview of relational algebra operations. It discusses unary operations like SELECT and PROJECT. The SELECT operation retrieves tuples that satisfy a selection condition, while PROJECT retrieves a subset of attributes. Binary set operations from relational algebra are also covered, including UNION, INTERSECTION, and DIFFERENCE. UNION combines tuples from two relations, INTERSECTION retrieves tuples common to both relations, and DIFFERENCE returns tuples only in the first relation.

Author

Thạnh Hồ

Language

EN