Allows the users to choose an existing DataSource from the list, or to define a new one.
The Define New Button opens the New Data Source Dialog.
The Select Button allows the user to choose a Data Source from the drop-down menu.
The Cancel Button closes the dialog with no changes to the current specification.
The New Data Source Dialog allows the user to define a new data source given three fields of information. Data sources are typically fairly simple structures, and this dialog reflects that simplicity.