What are the best practices for organizing data in a PHP database for a class schedule?

When organizing data in a PHP database for a class schedule, it is essential to create tables for classes, students, teachers, and schedules. Each table should have appropriate columns to store relevant information such as class name, teacher name, student names, and schedule timings. It is also important to establish relationships between these tables using foreign keys to ensure data integrity.

CREATE TABLE classes (
    id INT AUTO_INCREMENT PRIMARY KEY,
    class_name VARCHAR(50) NOT NULL,
    teacher_id INT,
    schedule_id INT
);

CREATE TABLE students (
    id INT AUTO_INCREMENT PRIMARY KEY,
    student_name VARCHAR(50) NOT NULL
);

CREATE TABLE teachers (
    id INT AUTO_INCREMENT PRIMARY KEY,
    teacher_name VARCHAR(50) NOT NULL
);

CREATE TABLE schedules (
    id INT AUTO_INCREMENT PRIMARY KEY,
    day VARCHAR(20) NOT NULL,
    start_time TIME NOT NULL,
    end_time TIME NOT NULL
);

ALTER TABLE classes
ADD FOREIGN KEY (teacher_id) REFERENCES teachers(id),
ADD FOREIGN KEY (schedule_id) REFERENCES schedules(id);