Question { Microsoft, 18176 }

Features and disadvantages of dataset ?

Answer

DisAdvantages:
1.Data is loaded into DataSet if other Client will update
the data same time in DBServer the updated Data will not
reflect automatically in DataSet.
2.Slower in comparision to DataReader

Advantages:
1.No network Traffic while communicating DBServer.
2.Mapping of Mutiple tables in DataSet make ,Relations
also.

Question { Wipro, 15823 }

feature of ADO.Net

Answer

1.ADO.Net is a Technology which interacts with DataSouce in
Disconnected mode.
2.Multiple users can work on Single Database at a time,there
is no Network Traffic.
3.Mapping of Multiple tables through Ado.Net
4.Reduce the workload on Server.
5.But Slow in Speed.

Question { Syntel, 4655 }

Define WCF ABC , Diffrent Contract. Diff b/w Wcf and in
webservice

Answer

WCF Technology is used for securring the
communcation/transaction between Client & server,Its
contract b/w Client & server,

Webservices can Be consumed by HTTP protocoll,but WCf can
be consume by any Protocol like HTTp, TCP.
Webservices are not Flexible but WCF is Flexible.