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Question : What is difference between dataset and datareader in ADO.NET?
Answer :

A DataReader provides a forward-only and read-only access to data, while the DataSet object can carry more than one table and at the same time hold the relationships between the tables. Also note that a DataReader is used in a connected architecture whereas a Dataset is used in a disconnected architecture.
 
 
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What is marshalling and what are different kinds of marshalling ?
What is a meeting workspace?
What is the relationship between XAML and JTS/JTA?
What operating systems will the .NET Framework 3.0 be available for?
What are Value types and Reference types ?
What is normalization in database?
In SQL Server 2008, if you have a server side trace running, and you run out of disk space, what happens?
Where is the data stored for the Data Collector in SQL Server 2008? (configiuration, collector sets, and metric data points)
What’s the Unix name for a Windows service equivalent?
Can each user have access to their own calendar?
On a computer running Windows Server 2003 or later hosting a SQL Server instance, which of the following password policies are checked for a SQL Server login when CHECK_POLICY is ON and CHECK_EXPIRATION is OFF?
What is the .NET Framework 3.0 (formerly WinFX)?
What are the advantages and disadvantages of viewstate?
What’s the access level of the visibility type internal?
How are web parts developed?
What is the GAC in Sharepoint?
How secure are Windows SharePoint Services sites hosted by Microsoft?
What is a stored procedure in SQL Server?
How Is XAML Used?
How does XAML relate to e-speak?
 
 
 
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