How to use Slide with database for data storage?

[Roman D]

Hi,
 
I need to use Slide with database storage. Database has tables for folders
and documents.
I can't find any examples of implementing slide webdav server with
abstracted data. 
Is data access in slide abstracted? Or all data access in within webdav
methods and you need to override these methods?
 
What is best practice to extend Slide server in order to achieve my goal ? 
 
I am completely lost. There is no examples on how to implement your own
webDav server using Slide, using own data sources and authentication.
 
Thank you.