DataSet object. DataSet object is the manifestation
of data in memory .It contains more than one
DataTable object. But DataTable contains column
and row, just like a chart in common database
.Developers even can define the relationship
between charts in order to create parent-child
relationships. DataSet is used in special
environment like helping to manage data in
memory, and you can use it to free data. DataSet
doesn’t need special prefix, compared with the
Data Provider, because it is the object used by all
Data Providers.