The DataStore screen is opened by clicking on the Dashboard button in the Admin Panel.
DataStore is the central place in SSP 7 to keep simple data organized. The main goal is to group common lists, like 'countries', or 'languages'. These lists can then be used in forms and processes.
A Parameter is built out of different fields. The fields are set in DataStore, when defining the Parameter.
Datastore Parameters can also have a query as a source.