What are the benefits of normalizing database tables in PHP to avoid redundancy and improve data retrieval efficiency?

Normalizing database tables in PHP helps avoid redundancy by organizing data into separate tables and linking them through relationships. This improves data retrieval efficiency as it reduces the amount of duplicated data stored in the database. By breaking down data into smaller, related tables, it also makes it easier to maintain and update the database structure. 

// Example of normalizing database tables in PHP

// Create a 'users' table to store user information
CREATE TABLE users (
    id INT PRIMARY KEY,
    username VARCHAR(50),
    email VARCHAR(50)
);

// Create a 'posts' table to store post information linked to users
CREATE TABLE posts (
    id INT PRIMARY KEY,
    user_id INT,
    title VARCHAR(100),
    content TEXT,
    FOREIGN KEY (user_id) REFERENCES users(id)
);

Keywords

database normalization redundancy data retrieval efficiency PHP tables

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