Hi Vishnu,
if your current project really depends on those features, it's looking real bad, because dynamic cursor handling is not supported in SAP HANA SQLScript.
The data structures need to be known at compile time and there's no API for cursor-metadata or something similar available.
That's the answer to your questions 1-3.
To your last question: I assume you are talking of global or local _temporary_ tables, right?
How those work and what they do differently is actually well documented. Just read up on them.
Out of interest: apparently you don't know the above things about SAP HANA. How come your project depends on them? Why don't you tell us more about your development - maybe there are other ways to implement your requirements that don't require dynamic cursors.
- Lars