how can we add table in a data set? without data adapater and also save that table in database

Dataset is a collection of Tables which is connection-less implementation. So to retrive tables from database it requires a connection-oriented i.e DataAdapter, without this u can't retrive table from database.

ex:        Mobile <------------Charger/Adapter <------------Electricity

[ without charger u can't charge u'r mobile, for charging electricity is requiered] so

  Mobile---------Connectin-less

 Charger----------Connection-oriented

  Electricity------Database

To add Table in dataset-

    da.fill(ds,"d");   where "d"--alias table name

Before asp.net i.e asp, DataReader was used to retrive data from database [record wise] but later DataAdapter is used [All the records of table]