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...

5 Questions

0 Views

Relational Model Terminology Quiz

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

List three properties of relations in the relational model terminology.

Relation name is distinct from all other relation names in relational schema. 2. Each cell of relation contains exactly one atomic (single) value. 3. Each attribute has a distinct name.

What is the cardinality of a relation in the relational model terminology?

The cardinality is the number of tuples in a relation.

Explain the difference between a relation and an attribute in the context of the relational model terminology.

A relation is a table with columns and rows, while an attribute is a named column of a relation.

Explain the significance of the order of attributes and tuples in a relation in the relational model terminology.

<p>The order of attributes has no significance, and theoretically, the order of tuples has no significance as well.</p> Signup and view all the answers

Define relational database schema and provide an example.

<p>Relational database schema is a set of relation schemas, each with a distinct name. An example is R(R1,R2,R3,...,Rn).</p> Signup and view all the answers