Reference 1 Posts:
https://www.cnblogs.com/biehongli/p/6025954.html
Things to consider: the type of data and the primary identification code, is empty. The relationship is one to one or one to many or many to many relationship
1. Create a model
2. Click OK to create a conceptual model CDM, the name can take themselves, created after the figure:
3. Create Entity student
Set entity properties
Built as shown:
Principal identifier editing module
About Identifier:
https://blog.csdn.net/g6465465/article/details/42372817
Click Apply and create complete
4. Create entity teacher
5. Create a relationship between students and classes
Set to-many relationship type:
6. Similarly create table teacher, established many relationships between students and teachers (a student can have more than a teacher, a teacher can have more than one student) as shown below:
