What is difference between DataSet.Copy() and DataSet.Clone()

 DataSet.Copy() : 

1. It copies both structure and Data.
2. Methods copies all the Dataset including it's datatables schemas, constraints along with the data.

                        DataSet  s;

                          DataSet s1;

                            s1= s.Copy();

DataSet.Clone() : 

1. It only copies structure, doesn't copy Data.
2. Copies only structure of the dataset. It includes all datatable schemas their contraints and excluding data in those datatables.

                          DataSet  s;

                          DataSet s1;

                            s1= s.Clone();