Database Normalization: A Practical Guide
•By Tech7 Team
Database normalization is the process of organizing data to reduce redundancy.
First Normal Form (1NF)
Eliminate repeating groups and ensure atomicity.
Second Normal Form (2NF)
Remove partial dependencies on composite keys.
Third Normal Form (3NF)
Remove transitive dependencies.
[sql] -- Example: Normalized tables CREATE TABLE customers ( customer_id INT PRIMARY KEY, name VARCHAR(100), email VARCHAR(100) ); CREATE TABLE orders ( order_id INT PRIMARY KEY, customer_id INT, order_date DATE, FOREIGN KEY (customer_id) REFERENCES customers(customer_id) ); [/sql]