There is some complex (compiled code I might add) that gets the data for that biz form dynamically and dynamically creates the columns and such. So unless you had the full source code version you might not know the full process.
In most of the controls you don't define a datasource, you define a CMS Class (namespace.class) and all the compiled code in the background handles the rest. There are instances when you can provide the datasource but not many.