Data from Database Using MVP-VM Design Pattern

In my quest to understand MVP-VM design pattern in preparation for a new project which will be using DevExpress, I am unable to find an example with a database example.

Viewing DevExpress, I am unable to locate an example with this design pattern.

So, my question is this, does anyone who has experience of this design pattern, if you have experience of this with DevExpress even better, can give me an example of database connection, mapping data from a database (query/table) to model, and saving data to the database?

I appreciate this may sound rather an elementary question, but I do not know with this pattern what is the best practice for taking data from the view to persist to a database, and vice versa. Therefore, I do not wish to go off and doing incorrect.

Thanks