更新 mysql.sql

mysql.sql

@@ -80,15 +80,14 @@ VALUES ('大学计算机基础', 'CF001', '必修', 3, '介绍计算机基础知
        ('计算机网络', 'CN002', '必修', 4, '学习计算机网络的基础理论和协议');
 
 
-CREATE TABLE attendance_records
+CREATE TABLE attendance_record
 (
     record_id  INT AUTO_INCREMENT PRIMARY KEY,
+    student_number VARCHAR(20) NOT NULL,
     course_id  INT  NOT NULL,
-    student_id INT  NOT NULL,
-    date       DATE NOT NULL,
-    status     ENUM('present', 'absent', 'late', 'excused'),
-    FOREIGN KEY (course_id) REFERENCES course (course_id),
-    FOREIGN KEY (student_id) REFERENCES student (student_id)
+    course_name VARCHAR(255) NOT NULL,
+    date       VARCHAR(255) NOT NULL,
+    status     VARCHAR(20)
 );
 
 
@@ -246,3 +245,4 @@ VALUES ('一、二节', '08:00:00', '09:30:00'),
        ('三、四节', '10:00:00', '11:30:00'),
        ('五、六节', '14:30:00', '16:00:00'),
        ('七、八节', '16:30:00', '18:00:00');
+