Practice Definition (6.2.1) - Normalization - Introduction to Database Systems
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Definition

Practice - Definition

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define functional dependency using your own words.

💡 Hint: Think of how a key unlocks a door.

Question 2 Easy

What is a trivial functional dependency? Give an example.

💡 Hint: Look for overlapping attributes.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does it mean for attribute A to functionally determine attribute B?

A represents multiple values of B.
A uniquely identifies B's value.
B can determine A.
They are unrelated.

💡 Hint: Think about how keys work.

Question 2

Is StudentID → StudentName an example of a trivial functional dependency?

True
False

💡 Hint: Consider if attributes overlap.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given the relation {OrderID, CustomerID, OrderAmount}, identify possible functional dependencies and justify their relevance.

💡 Hint: Trace relationships between the data.

Challenge 2 Hard

Explain how understanding functional dependencies can prevent data anomalies in a complex database.

💡 Hint: Think about what can happen if information is duplicated.

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