Does BBBi provide drill down capability?

Yes.  ProView BBBi pages provide drill down and links from summary to detail data.

Also, BBBi’s database views are ideal for use with elaborate reporting and query tools, like Oracle Discoverer. These user friendly reporting utilities support drag and drop report building with easy to use drill down, sort, filter, matrix, chart and role capabilities. They usually provide spreadsheet like results that can be easily exported to Excel.