The physical model of the PowerDesigner design table selects comments and defaults, non-empty

You need to choose this by yourself, and it won’t be there by default

Basic tutorial: http://jingyan.baidu.com/article/bea41d43684fa4b4c51be6cf.html

http://jingyan.baidu.com/article/3aed632e6c0e9d7010809138.html

Right click->Properties- >Columns- >Customize Columns and Filter (or directly use the shortcut key Ctrl+U)-> Comment (check before)->OK

Set non-empty yes

Add a primary key identifier to the field, PFM, P is the primary key, F is the foreign key, and M is non-empty

 pre> 
https://zhidao.baidu.com/question/213433157.html

When using it to design the table structure, the code can generally be used In Chinese, it means to describe the name. 
comment is the meaning of comment