Describe the DataSet object in ADO.NET.

Answer

The DataSet is the most important object in ADO.NET. DataSet object works as a mini database. It provides the disconnected environment. It persists data in memory which is separate from the database. A DataSet contains a collection of DataTable objects means it can store more than one table simultaneously. Each DataTable object contains collections of DataRow, DataColumn and Constraint objects. A DataSet also contains a collection of DataRelation objects that define the relationship between the DataTable objects. It belongs to “System.Data” namespace.