What are the advantages of creating separate tables for related data entities, such as bands, instruments, and genres, in PHP database design?

Creating separate tables for related data entities allows for better organization, data integrity, and scalability in PHP database design. By separating entities like bands, instruments, and genres into their own tables, it becomes easier to manage and query the data. This approach also enables more efficient data retrieval and manipulation, as well as the ability to establish relationships between different entities.

CREATE TABLE bands (
    id INT PRIMARY KEY,
    name VARCHAR(50) NOT NULL
);

CREATE TABLE instruments (
    id INT PRIMARY KEY,
    name VARCHAR(50) NOT NULL
);

CREATE TABLE genres (
    id INT PRIMARY KEY,
    name VARCHAR(50) NOT NULL
);