Dissertations / PhD Topic Help on Database Management Systems [5]

Hi,

Could you please help by suggesting few topics for my PhD program in Database Management Systems Area.
It could include Data Warehousing trends/patterns as well.

I am to enroll for PhD program, hence wish to keep/shortlist few topics ready for my proposal.

Your help will matter a lot for my PhD dream fulfillment :)
Thanks a lot in advance for you help.

Regards,
Anupam