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4 cards from this section. Quick, good the night before a test.
What is normalization?
Think about how we might structure a database to avoid repeating information.
What does 1NF stand for?
What happens to repeating groups in 1NF?
What is the main goal of normalization?
Think about why we would want to organize data instead of repeating it.
Does 1NF require that each column has unique values?
Consider what atomic means in this context.
You are given a user database that contains first name, last name, and a company name. Users can work at different companies. Analyze whether this table can be normalized into 2NF and explain how.
Consider how companies relate to users in terms of unique entries.
Design a normalized schema for a retail store that tracks customers, orders, and products. Explain how you would achieve 3NF.
How do you track which customer made which order while avoiding redundancies?
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