Accessing the Draft database with OData

Hello, 

I am currently working on an App for Office 2013 (Project Professional 2013) and would like to know if there is a way to access the draft database with OData.  I know that the Four different databases from Project 2010 are "merged" into one in 2013 but when I query OData in 2013 I can only access the published projects. 

Is there a parameter to specify in the AJAX query so as to choose what table we want to query ?

Thanks in advance, 

I know this is a brand new technology but an answer would be very helpful.

Thomas.