4. The computer implemented method of claim 1 wherein the first data source structure type of the first data source structure comprises a database structure, and wherein the second data source structure type of the second data source structure comprises a non-database file structure.
4. The computer implemented method of claim 1 wherein the first data source structure type of the first data source structure comprises a database structure, and wherein the second data source structure type of the second data source structure comprises a non-database file structure. 6. The computer implemented method of claim 4 wherein the first data source structure type of the first data source structure comprises a database table structure, and wherein the second data source structure type of the second data source structure comprises non-database raw file structure.