In Quixy, data tables act as a primary data storage area to store the information captured in an application or retrieve the data into an application from the data table. Whereas, data source is an amalgamation of data tables and is mainly used to create reports, list screens (actionable reports) and Reference (to fetch data from two or more data tables into an application).
As we are talking about fetching data from data table and data source on to an application, you can fetch data which is captured in an application, let us say app A, into another application, let us say app B. You need to first store the information captured in app A in a data table, let us say data table A. Now, to retrieve the data from data table A into the app B, you need to place a reference element in the app B and call the data present in the data table A.