what is trouble data?

Answer 1

Most commonly, it's records in a database that are known to be somehow bad -- either the records are duplicates, or are inaccurate, or have corrupt / incomplete data.

Sometimes, you insert trouble data intentionally into a database, to check how well a program using that database will handle the issue.

More often, you erect systems that have the express purpose or altering or removing trouble data from a database, so that the records and reporting from your database is accurate.

Answer 2

Looks like it is data that can cause trouble -- check this out:

Data is the biggest Y2K problem, and--since dates are the difficulty--most trouble data resides in databases and spreadsheets. A good Y2K utility will point out any two-digit dates, then change them if necessary so there's no possibility that the software will misinterpret those dates as nearer 1900 than 2000. Only two of our reviewed checkers (Check 2000 PC Deluxe and Norton 2000) do a decent job of digging into database and spreadsheet files.
http://www.kean.edu/~spersad/y2k.htm

Messages in Flow Motion...For now, we can only hope to judiciously approach factual examination of data we simply must accept as trustworthy. One of those data compilations we routinely plow through is the Fed Flow of Funds report. Let's put it this way, if the market ever comes to find that Fed publications or data are a fabrication, the whole game is over, isn't it? It just so happens that the recent Flow of Funds report also suggests a fair amount of potential for factual financial market double trouble on the horizon, completely independent of the accounting landmines that are blowing off in semi-erratic fashion on the Street these days. The two double trouble data point extremes witnessed in the current Flow of Funds report concern both households and the corporate sector. Let's get right to the numbers.
http://www.safehaven.com/showarticle.cfm?id=229&pv=1

Answer 3

can you explain more to your problem liek what is missing or what the thing says