2022 summer practice (PowerDesigner tutorial learning record) (first week)

PowerDesigner Use
Problems in database design software
1. I don't know the relationship between tables
2. Can there be an intermediate software to let Mysql and Orcale Put the tables in together

The program is relatively old , Programmers can use , Generally, you will be given xxx.pdm The relationship between business systems

Database development steps ：
1. Demand analysis （ Business analysis ）
2. Conceptual analysis （ER）
3. logic analysis （ER）
4. Physical analysis

Operation steps

Set up ID Automatically add

Set limits / cascade / empty

Import database

Reverse generate data model according to database