MDAC 2.5 SDK - OLE DB Programmer's Reference
Chapter 18: Programming Considerations


 

Provider Registry Entries

Providers are identified in the registry by the OLE DB Provider subkey under the class ID of the provider. Under HKEY_CLASSES_ROOT, providers must have the following subkeys and values for the extension of persisted data source object files and for the programmatic identifier.

Keys and subkeys Name Value
HKEY_CLASSES_ROOT    
   CLSID    
      ProviderCLSID (Default) VersionIndependentProgID
  OLEDB_SERVICES SupportedServices[1]
         ExtendedErrors[2] (Default) Extended Error Service
            ErrorLookupCLSID[2] (Default) FriendlyDisplayName
         InprocServer32 (Default) ProviderDLLFilename
  ThreadingModel Apartment|Free|Both
         OLE DB Provider (Default) Description
         ProgID (Default) ProviderProgID
         VersionIndependentProgID (Default) VersionIndependentProgID
   ProviderProgID (Default) Description
      Clsid (Default) ProviderCLSID

[1]   Generally 0xffffffff.

[2]   If Error Lookup Service is supported.

When an instance of the object is first created, providers return an interface pointer on a data source object. For more information about data source objects, see "Data Source Objects" in Chapter 2, "Data Source and Session Objects."