MDAC 2.5 SDK - OLE DB Programmer's Reference
Appendix C: OLE DB Properties

DBPROP_INIT_DATASOURCE

Property group: Initialization

Property set: DBPROPSET_DBINIT

Type: VT_BSTR

Typical R/W: R/W

Description: Data Source

Indicates the name of the database or enumerator to connect to. DBPROP_INIT_DATASOURCE is used to identify the data source object to connect to—for example, a relational database server or a local file. If the provider uses two-part naming to identify the data source object, the data source object name is qualified with the location specified in DBPROP_INIT_LOCATION.