drill down

verb
1.
(intransitive, adverb) to look at or examine something in depth: to drill down through financial data
Contemporary definitions for drill down
noun

See drilldown

drill down in Technology

database
(Or "drill-down analysis") To examine data in greater detail, especially, in reporting, to interactively select some item from a summary and display the data that contributed to that item, broken down by some extra parameter.
For example, when viewing your company's total worldwide sales for each month of this year, you might drill down to see October's sales by country, then again to see October's sales in Afghanistan by product and so on.
This kind of analysis is often supported by some kind of data warehouse.
(2007-06-04)