Practice First Normal Form (1nf) (6.4.1) - Normalization - Introduction to Database Systems
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First Normal Form (1NF)

Practice - First Normal Form (1NF)

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the main requirement for a table to be in 1NF?

💡 Hint: Think about how the values in each cell should be organized.

Question 2 Easy

Is having a column with multiple values in a single cell acceptable in 1NF?

💡 Hint: Remember the importance of atomicity in values.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does it mean for a table to be in 1NF?

Columns must have multiple values
Each value must be atomic and no repeating groups
There are no constraints on values

💡 Hint: Consider the fundamental requirements of 1NF.

Question 2

True or False: A unique primary key is optional in 1NF.

True
False

💡 Hint: Think about why each entry in a table must be unique.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given a Student table with PhoneNumbers as a single entry that lists multiple numbers, redesign the table to ensure it meets 1NF standards.

💡 Hint: How can you separate multiple pieces of information into distinct rows?

Challenge 2 Hard

Analyze a course registration database in which students have Course1ID, Course2ID, etc. Suggest a redesign.

💡 Hint: Think about how to structure relationships in a way that avoids redundancy.

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Reference links

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