What are the potential advantages and disadvantages of splitting data into multiple tables in a PHP database?

When splitting data into multiple tables in a PHP database, the potential advantages include better organization of data, improved performance by reducing redundant data, and easier maintenance and scalability. However, the disadvantages may include increased complexity in queries that require joining multiple tables, potential for data inconsistency if not properly managed, and the need for additional effort in managing relationships between tables.

// Example of splitting data into multiple tables in a PHP database

// Creating a users table
CREATE TABLE users (
    id INT PRIMARY KEY,
    username VARCHAR(50),
    email VARCHAR(50)
);

// Creating a posts table
CREATE TABLE posts (
    id INT PRIMARY KEY,
    user_id INT,
    title VARCHAR(100),
    content TEXT,
    FOREIGN KEY (user_id) REFERENCES users(id)
);