更新 mysql.sql

mysql.sql

@@ -88,53 +88,10 @@ CREATE TABLE attendance_records
     student_id INT  NOT NULL,
     date       DATE NOT NULL,
     status     ENUM('present', 'absent', 'late', 'excused'),
-    FOREIGN KEY (course_id) REFERENCES courses (course_id),
+    FOREIGN KEY (course_id) REFERENCES course (course_id),
     FOREIGN KEY (student_id) REFERENCES students (student_id)
 );
 
-CREATE TABLE class_course
-(
-    class_course_id INT AUTO_INCREMENT PRIMARY KEY,
-    class_id        INT NOT NULL,
-    course_id       INT NOT NULL,
-    FOREIGN KEY (class_id) REFERENCES class (class_id),
-    FOREIGN KEY (course_id) REFERENCES course (course_id)
-);
-
-INSERT INTO class_course(class_id, course_id)
-VALUES (1, 1),
-       (1, 2),
-       (1, 3),
-       (1, 4),
-       (1, 5),
-       (1, 6),
-       (1, 7),
-       (1, 8),
-       (2, 1),
-       (2, 2),
-       (2, 3),
-       (2, 6),
-       (2, 10),
-       (2, 16),
-       (2, 13),
-       (2, 26),
-       (3, 30),
-       (3, 29),
-       (3, 28),
-       (3, 27),
-       (3, 25),
-       (3, 24),
-       (3, 4),
-       (3, 13),
-       (4, 11),
-       (4, 12),
-       (4, 14),
-       (4, 16),
-       (4, 15),
-       (4, 20),
-       (4, 7),
-       (4, 26);
-
 
 CREATE TABLE class
 (
@@ -155,7 +112,7 @@ CREATE TABLE students
     student_number VARCHAR(20)  NOT NULL,
     student_name   VARCHAR(255) NOT NULL,
     class_id       INT,
-    FOREIGN KEY (class_id) REFERENCES classes (class_id)
+    FOREIGN KEY (class_id) REFERENCES class (class_id)
 );
 
 INSERT INTO student (student_name, student_number, class_id)
@@ -218,27 +175,59 @@ CREATE TABLE teacher_class_course
 (
     id         INT AUTO_INCREMENT,
     teacher_id INT,
-    class_course_id INT,
+    course_id  INT,
+    class_id   INT,
     PRIMARY KEY (id),
-    FOREIGN KEY (teacher_id) REFERENCES teachers (teacher_id),
+    FOREIGN KEY (teacher_id) REFERENCES teacher (teacher_id),
-    FOREIGN KEY (class_course_id) REFERENCES class_courses (class_course_id)
+    FOREIGN KEY (course_id) REFERENCES course (course_id),
+    FOREIGN KEY (class_id) REFERENCES class (class_id)
 );
 
+INSERT INTO teacher_class_course(teacher_id, course_id, class_id)
+VALUES (1, 1, 1),
+       (1, 2, 1),
+       (1, 1, 3),
+       (1, 1, 4),
+       (2, 2, 1),
+       (2, 2, 2),
+       (2, 2, 3),
+       (2, 2, 4),
+       (3, 2, 1),
+       (3, 2, 2),
+       (3, 2, 3),
+       (3, 2, 4);
 
 
-CREATE TABLE schedules
+
+CREATE TABLE schedule
 (
     schedule_id INT AUTO_INCREMENT,
     day_of_week INT,
     period_id   INT,
-    class_course_id INT,
     teacher_id  INT,
+    class_id    INT,
+    course_id   INT,
     PRIMARY KEY (schedule_id),
-    FOREIGN KEY (period_id) REFERENCES course_periods (period_id),
+    FOREIGN KEY (period_id) REFERENCES time_period (period_id),
-    FOREIGN KEY (class_course_id) REFERENCES class_courses (class_course_id),
+    FOREIGN KEY (teacher_id) REFERENCES teacher (teacher_id),
-    FOREIGN KEY (teacher_id) REFERENCES teachers (teacher_id)
+    FOREIGN KEY (class_id) REFERENCES class (class_id),
+    FOREIGN KEY (course_id) REFERENCES course (course_id)
 );
 
+
+INSERT INTO schedule (day_of_week, period_id, teacher_id, class_id, course_id) VALUES
+(1,1,1,1,1),
+(1,2,1,2,1),
+(2,3,1,1,3),
+(2,4,1,1,4),
+(3,1,1,1,2),
+(3,4,1,1,1),
+(4,2,1,2,1),
+(4,3,1,1,1),
+(5,1,1,1,3),
+(5,3,1,1,1);
+
+
 CREATE TABLE time_period
 (
     period_id   INT AUTO_INCREMENT,
@@ -253,3 +242,6 @@ 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');
+
+
+