Sample data

I think it would help for there to be sample data for the site; something like the Microsoft Northwind database that authors can use in their samples. Many articles use data and each article provides the sample data and how to create it and such. That is a necessary part of many articles but it is not directly relevant for all. Many articles could just use sample data from someplace else. It would make it easier for authors and readers if there was some common sample data that articles could use. There could be both database formats and XML formats and whateder else might be appropriate.