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...

10 Questions

2 Views

Database Systems and Data Modeling

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 purpose of a data model in database design?

To facilitate interaction among the designer, the applications programmer, and the end user (correct)

To define the business rules of an organization

To optimize database performance

To create a physical representation of the database

What type of relationship is described when one instance of entity A is associated with multiple instances of entity B?

Many-to-one (M:1) relationship

Many-to-many (M:N or M:M) relationship

One-to-many (1:M) relationship (correct)

One-to-one (1:1) relationship

What is the primary source of business rules in an organization?

Direct interviews with end users

Policy makers

Written documentation (correct)

Department managers

How do nouns translate into data model components?

Into entities Signup and view all the answers

What is the primary benefit of using data abstraction in data modeling?

Reduced data complexity Signup and view all the answers

What is the primary purpose of a conceptual schema in a data model?

To provide a global view of the entire database, independent of software and hardware Signup and view all the answers

What is the primary advantage of using an Entity-Relationship Diagram (ERD) in data modeling?

To graphically model database components and their relationships Signup and view all the answers

What is the primary characteristic of a relational data model?

It represents data as a collection of related entities, with each entity described by a set of attributes Signup and view all the answers

What is the purpose of the external model in a data model?

To provide a specific representation of an external view of the database, tailored to a particular business unit’s operations Signup and view all the answers

What is the primary advantage of using a relational model in a database implementation?

It is widely adopted as the current database implementation standard Signup and view all the answers