MDAC 2.5 SDK - OLE DB Programmer's Reference
Appendix C: OLE DB Properties
Property group: Data Source Information
Property set: DBPROPSET_DATASOURCEINFO
Type: VT_BSTR
Typical R/W: R
Description: DBMS Version
Indicates the version of the product accessed by the provider. The version is of the form ##.##.####, where the first two digits are the major version, the next two digits are the minor version, and the last four digits are the release version. The provider must render the product version in this form but can also append the product-specific version—for example, "04.01.0000 Rdb 4.1".