Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

Relational Algebra in Database Management

12 Questions

3 Views

Relational Algebra in Database Management

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary function of the SELECT operation in relational algebra?

To add new columns to a relation

To combine two relations into a single relation

To select a subset of tuples from a relation based on a condition (correct)

To eliminate duplicate tuples from a relation

What is the result of the PROJECT operation in relational algebra?

A set of distinct tuples with selected columns (correct)

A relation with all columns and duplicate tuples

A multiset of tuples with duplicate columns

A relation with all columns and no duplicate tuples

What is the property of the SELECT operation that allows multiple operations to be combined into a single operation?

Associativity

Commutativity (correct)

Selectivity

Distributivity

What is the term used to describe the fraction of tuples selected by a selection condition in relational algebra?

Selectivity Signup and view all the answers

What is the purpose of relational algebra in the relational model?

To define a set of operations for manipulating data Signup and view all the answers

What is the term used to describe a sequence of relational algebra operations?

Relational algebra expression Signup and view all the answers

The PROJECT operation is commutative.

False Signup and view all the answers

The SELECT operation can be used to deselect columns from a table.

False Signup and view all the answers

Relational Algebra in Database Management

Choose a study mode

Podcast

Questions and Answers

What is the primary function of the SELECT operation in relational algebra?

What is the result of the PROJECT operation in relational algebra?

What is the property of the SELECT operation that allows multiple operations to be combined into a single operation?

What is the term used to describe the fraction of tuples selected by a selection condition in relational algebra?

What is the purpose of relational algebra in the relational model?

What is the term used to describe a sequence of relational algebra operations?

The PROJECT operation is commutative.

The SELECT operation can be used to deselect columns from a table.

A relational algebra expression can consist of a sequence of unary and binary operations.

The term 'degree' refers to the number of tuples in a relation.

The DIVISION operation is a unary relational operation.

Relational algebra provides a basic set of operations for the relational model.

More Like This

Database Management System Quiz

Fundamental Relational Algebra Operators Quiz

DBMS Course Overview

Lenguaje SQL y Álgebra Relacional

Upgrade to continue