Question: Relational Algebra Relational algebra is a procedural query language, which takes instances of relations as input and yields instances of relations as output. It uses

Relational Algebra

Relational algebra is a procedural query language, which takes instances of relations as input and yields instances of relations as output. It uses operators to perform queries. An operator can be either unary or binary. They accept relations as their input and yield relations as their output.

Q1. Need one example of relational algebra, as briefly

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