Dynamicmodules.

Hi,

 I have inherited a sitefinity solution to maintain. I have no clue how the system works. There is a Entity project, which is made from the Nhibernatemaps. It feeds the content from the backend. These content types are in the App_data/Sitefinity/Configuration folder's config files. Does that mean, these content types are created in the config files? If they are created through the config files, how can i push the changes to the backend.  How to generate proxy classes for data access? Is there any documentation, which can guide me to understand the relationship between the dynamicmodulesconfig file and the system.