What are the requirements for a database table to be in 1st Normal Form (1NF)?
Understand the Problem
The question is related to database normalization, specifically the 1st Normal Form (1NF). It asks about the characteristics and requirements of 1NF based on the provided data structure.
Answer
Atomic values, uniform column types, primary key, no duplicate rows.
The table must have atomic values, uniform column types, unique identification (often with a primary key), and no duplicate rows for 1NF.
Answer for screen readers
The table must have atomic values, uniform column types, unique identification (often with a primary key), and no duplicate rows for 1NF.
More Information
First Normal Form ensures data is stored in the simplest, most manageable way by eliminating redundancy and creating a solid basis for further normalization.
Tips
A common mistake is failing to enforce atomicity, leading to complex data types that can complicate queries.
Sources
- Database Normalization - freeCodeCamp - freecodecamp.org
- First Normal Form (1NF) - GeeksforGeeks - geeksforgeeks.org
- First Normal Form (1NF) - TutorialsPoint - tutorialspoint.com
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