The source code and data for the sample applications are installed with the server in …/Striim/Samples. You may also download them from www.striim.com/docs/samples/PosApp.zip or www.striim.com/docs/samples/MultiLogApp.zip.
The alternative PosAppThrottled.tql and MultiLogAppThrottled.tql versions introduce delays in the parsing of the source streams in order to simulate real-time data in the dashboards. See the comments in those TQL files for more information.