cObject
---BaseData_Set
------DataSet
---------DataDictionary
This class is a obsolete. This class was used and instantiated in character mode DataFlex and was replaced by the DataDictionary class many revisons ago. You should be using the DataDictionary class in all DataFlex applications.
DataSet is an abstract class used to provide methods for accessing databases in a program. Its sub-class DataDictionary should be used for sub-classing and instantiation.