I have not seen a document created by Adobe identifying the specific table names. As a rule of thumb enterprise software vendors discourage accessing the database directly and encourage the use of published APIs. Direct database access for the purpose of create, update or delete is 'dangerous'. You are free to open up the adobe schema in your favourite database browsing tool, however.
I understand that the point of not create/delete/update. I just want to read the database to get some information of the forms. e.g Run a query to get the list of all forms in the resources of repository along with its creator, date and time, size of the form, etc.
Did you the try the repository API classes to fetch these values?
Look at the following link:
You might find some useful methods in this interface.