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Using Calculated DataColumns in ADO.NET

  • Статья

a great reference for
Calculated fields inside a dataset.

If you have a background in database work, you have undoubtedly
run into the rules of normalization. But even though ADO.NET's DataSet class
is sometimes described as a "relational database in memory," it's important to
remember that there are differences between databases and DataSets. In this
particular case, the DataSets are designed to manage calculated columns. In
this article Mike Gunderloy will show you the syntax for building calculated
columns in your own DataSets, and discuss some of the pros and cons of using
such columns.
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