用mysqlworkbench基于学生选课系统设计数据库不少于八张表MySQL语言实现
时间: 2023-12-17 14:02:43 浏览: 110
好的,我可以回答这个问题。以下是使用 MySQL Workbench 基于学生选课系统设计的数据库,包含不少于八张表的 MySQL 语言实现:
1. 学生表(students):
```
CREATE TABLE students (
student_id INT PRIMARY KEY,
student_name VARCHAR(50),
student_major VARCHAR(50),
student_grade INT
);
```
2. 课程表(courses):
```
CREATE TABLE courses (
course_id INT PRIMARY KEY,
course_name VARCHAR(50),
course_credit INT,
course_teacher VARCHAR(50)
);
```
3. 教师表(teachers):
```
CREATE TABLE teachers (
teacher_id INT PRIMARY KEY,
teacher_name VARCHAR(50),
teacher_title VARCHAR(50)
);
```
4. 选课表(enrollments):
```
CREATE TABLE enrollments (
enrollment_id INT PRIMARY KEY,
student_id INT,
course_id INT,
FOREIGN KEY (student_id) REFERENCES students(student_id),
FOREIGN KEY (course_id) REFERENCES courses(course_id)
);
```
5. 成绩表(grades):
```
CREATE TABLE grades (
grade_id INT PRIMARY KEY,
student_id INT,
course_id INT,
grade FLOAT,
FOREIGN KEY (student_id) REFERENCES students(student_id),
FOREIGN KEY (course_id) REFERENCES courses(course_id)
);
```
6. 学院表(departments):
```
CREATE TABLE departments (
department_id INT PRIMARY KEY,
department_name VARCHAR(50)
);
```
7. 专业表(majors):
```
CREATE TABLE majors (
major_id INT PRIMARY KEY,
major_name VARCHAR(50),
department_id INT,
FOREIGN KEY (department_id) REFERENCES departments(department_id)
);
```
8. 班级表(classes):
```
CREATE TABLE classes (
class_id INT PRIMARY KEY,
class_name VARCHAR(50),
major_id INT,
FOREIGN KEY (major_id) REFERENCES majors(major_id)
);
```
以上就是基于学生选课系统设计的数据库,包含不少于八张表的 MySQL 语言实现。希望能对您有所帮助。
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