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Linq to DataSet

The DataSet is used to bind data to controls in an application. Rather than connecting directly to the database, the DataSet enables an application to use off-line (cached) data, or subsets of several data sources. When the application is brought online, the changes in the DataSet can be updated in the database.

LINQ to Dataset makes querying over cached data faster and easier than the filtering and sorting methods available to a DataSet.