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Let's go through the steps to create a database, create a table with various data types, and alter the table to add primary and foreign keys. I'll use SQL syntax for these tasks.
1. Create a Database
2. Create a Table with Various Data Types
3. Alter Table to Add a Foreign Key
Assuming we have another table
Courses with a primary key CourseID, we will add a foreign key CourseID to the Students table.First, let's create the
Courses table:Next, we alter the
Students table to add a foreign key:Complete SQL Script
Here's the complete script combining all the above steps:
This script will:
- Create a database named
SchoolDB.
- Create a
Studentstable with various data types and a primary key onStudentID.
- Create a
Coursestable with a primary key onCourseID.
- Alter the
Studentstable to add aCourseIDcolumn and a foreign key constraint linking it to theCourseIDcolumn in theCoursestable.
- 作者:现代数学启蒙
- 链接:https://www.math1234567.com/article/createdatabase
- 声明:本文采用 CC BY-NC-SA 4.0 许可协议，转载请注明出处。
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