ADO.Net

DataTable is the primary building block of ADO.NET. It is made up of a Columns and Rows collection
A DataView is a bindable, customized view of a DataTable.You can create multiple DataView's off one DataTable, each one can contain different data sorted in different order
DataColumn is the same and has the same purpose in both the DataTable and DataView. it makes up the schema of the table.
DataTable is made up of what are called DataRow's while the DataView is made up of what are called DataRowView's