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Relational Algebra Quiz

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@ErrFreeAbundance

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Questions and Answers

What is the primary purpose of relational algebra?

To optimize query performance in relational databases

To provide a theoretical foundation for relational databases (correct)

To define data types in relational databases

To implement NoSQL databases

In relational algebra, what does the project operation do?

Selects a subset of columns from a relation (correct)

Combines tuples from two relations

Performs set difference between two relations

Retrieves all the tuples from a relation

Which operation in relational algebra is used to combine tuples from two relations based on a related attribute?

Project

Union

Join (correct)

Select

Study Notes

Relational Algebra

The primary purpose of relational algebra is to provide a formal system for manipulating relational databases.

Operations in Relational Algebra

The project operation (π) selects only specific columns from a relation.
The join operation (⋈) combines tuples from two relations based on a related attribute, allowing data to be merged from multiple tables.

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Description

Test your knowledge of relational algebra with this quiz. Learn about the primary purpose of relational algebra, the operation used to combine tuples from two relations based on a related attribute, and the function of the project operation in relational algebra.