IDatum Interface

Provides access to members that control the properties of all horizontal datums.

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

		Description
	Abbreviation	The abbreviated name of this spatial reference component.
	Alias	The alias of this spatial reference component.
	FactoryCode	The factory code of the spatial reference.
	Name	The name of this spatial reference component.
	Remarks	The comment string of this spatial reference component.
	Spheroid	The spheroid of this horizontal datum.

Interfaces	Description
ISpatialReferenceInfo	Provides access to members that control the properties common to all components of a spatial reference system.

CoClasses and Classes	Description
Datum	Creates a datum.

EDN: ESRI Developer Network