When hibernate is mapped to a database, @ ManyToOne and @ onetoworkflow

The first time I used hibernate to automatically generate a table that involves foreign keys for multiple tables, I encountered several errors using the @ onetoworkflow and @ ManyToOne annotations.

First, declare a base. There is no need to correspond one-to-one annotations @ onetoworkflow and @ ManyToOne.

First question: What is the difference between @ onetoworkflow and @ ManyToOne?

When @ ManyToOne is used, such as the project manager class and the programmer class, a Project Manager manages multiple programmers,

That is, the field "mid" is generated in the t_programmer table corresponding to this Programmer ";

The @ onetoworkflow annotation is in

The field "mid" is generated in the t_programmer table. Multiple programmers correspond to one project manager.

It is worth mentioning that when @ onetoworkflow is used, Set <> j Set is required. Otherwise, an error is returned.

These are basic things. I forgot to take a look at them at any time.