Practice Functional Dependencies (6.2) - Normalization - Introduction to Database Systems
Students

Academic Programs

AI-powered learning for grades 8-12, aligned with major curricula

Engineering Courses
Professional

Professional Courses

Industry-relevant training in Business, Technology, and Design

Certifications
Games

Interactive Games

Fun games to boost memory, math, typing, and English skills

Functional Dependencies

Practice - Functional Dependencies

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define a functional dependency with an example.

💡 Hint: Think about how you can uniquely identify information.

Question 2 Easy

What is a trivial functional dependency?

💡 Hint: Consider examples where parts are components of a whole.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does A → B represent in a functional dependency?

A determines B
B determines A
A and B are equal

💡 Hint: Think about how one can lead to the other.

Question 2

True or False: A trivial functional dependency is always true.

True
False

💡 Hint: Consider the subset relationships.

3 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given the set of attributes A, B, and C, with functional dependencies A → B and A, C → B, prove the closure of A.

💡 Hint: Break down the relationships step-by-step.

Challenge 2 Hard

In a relation with the attributes StudentID, CourseID, and Instructor, if you know the FDs: StudentID → CourseID and CourseID → Instructor, explain why StudentID can determine the Instructor.

💡 Hint: Follow the chain of dependencies.

Get performance evaluation

Reference links

Supplementary resources to enhance your learning experience.