2.2.8.9 Model Data Source Connections
Model data source connections pull data in to the spreadsheet data model (as specified in [MS-XLDM]) instead of directly pulling it into workbook. A connection is a model data source if the idbtype field of the BrtBeginExtConnection (section 2.4.80) record is one of the following (section 2.5.31):
DBTOLEDBPP
DBTDATAFEED
DBTWORKSHEET
DBTTEXTPP