Dataset Object

Dataset may Contain,

   1) DataSet - Collection of One or more then One DataTable.
   2) DataTable - Collection of DataColumns and DataRows
   3) DataColumn - Each DataTable's may contain one or more DataColumns
   4) DataRow - Each DataTable's may contain one or more DataRows
   5) Constraints 
   6) DataRelation - RelationShip between DataTable's DataColumns

Thank You

Hi,

Dataset has a collection of Data Table object within the Tables collection. Each Data Table object contains a collection of Data Row objects and a collection of Data Column objects. There are also collections for the primary keys, constraints,
and default values used in this table, which is called as constraint collection, and the parent and child relationships between the tables. Finally, there is a Default View object for
each table. This is used to create a Data View object based on the table, so that the data can be searched, filtered, or otherwise manipulated while displaying the data.

http://msdn.microsoft.com/en-us/library/aa723609.aspx


Hope this will help you.

Thanks.