Hello Nadim,
currently there is no "generic" access to all internal properties of Design Studio applications.
For data sources there is support on SDK - all SDK components which are data source bound you get the result set and a corresponding meta data information (some to come in 1.4 release, see What's Coming in Design Studio 1.4 SDK).
You can also write a component where you pass some of the information - actually everything what is accessible via BIAL script language can be passed, although there is no generic SDK component infrastructure which makes it.
I would actually ask why you want to have such access (or what you want to make with those properties?)
Karol