CREATE TABLE user ( id INT AUTO_INCREMENT PRIMARY KEY, nickname VARCHAR(50) NOT NULL, phone_number VARCHAR(15) NOT NULL UNIQUE, password VARCHAR(255) NOT NULL, identity ENUM('teacher', 'student') NOT NULL, is_active BOOLEAN NOT NULL ); INSERT INTO user (nickname, phone_number, password, identity, is_active) VALUES ('Alice', '10000000001', 'password1', 'student', TRUE), ('Bob', '10000000002', 'password2', 'teacher', TRUE), ('Carol', '10000000003', 'password3', 'student', FALSE), ('David', '10000000004', 'password4', 'teacher', TRUE), ('Eve', '10000000005', 'password5', 'student', TRUE), ('Frank', '10000000006', 'password6', 'teacher', FALSE), ('Grace', '10000000007', 'password7', 'student', TRUE), ('Hank', '10000000008', 'password8', 'teacher', TRUE), ('Ivy', '10000000009', 'password9', 'student', FALSE), ('Jack', '10000000010', 'password10', 'teacher', TRUE); CREATE TABLE menu_items ( id INT AUTO_INCREMENT PRIMARY KEY, menu_name VARCHAR(100), role ENUM('student', 'teacher'), `order` INT ); INSERT INTO menu_items (menu_name, role, `order`) VALUES ('课程信息', 'student', 1), ('课程签到', 'student', 2), ('公告信息', 'student', 3), ('签到提醒', 'student', 4); INSERT INTO menu_items (menu_name, role, `order`) VALUES ('课程类别', 'teacher', 1), ('课程信息', 'teacher', 2), ('课程签到', 'teacher', 3), ('签到提醒', 'teacher', 4);