Provider Registry Entries

OLE DB Programmer's Reference

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.

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