Working with Schemas
Schema Management
FDOClass
FDOFeatureClass
FdoFeatureClass is a class that defines features. In the case of GIS, they would often be spatial features, having some sort of geometry associated with them. In most providers, FdoFeatureClass requires a unique identifier to distinguish the features.
However, there are identifiers only if no base class exists. If the base class has an identifier, the child class does not have one. You cannot set an identifier to the child class. Any class definition that has a base class cannot also have any identity properties because it inherits from the base class.
Therefore, you cannot send an identifier when a feature class is a child since it always inherits the identifier from the base class.