Summary
When building the presentation services tier of a multi-tier application, you need to be concerned with issues of data binding, navigation, and validation, among others. Today you learned the basics of how the objects exposed by ADO.NET can be used in both Windows Forms and Web Forms applications to display, edit, and validate data.
However, to get the data that the presentation services tier works with, you need to create classes in the data services tier. Tomorrow, you'll learn some strategies and techniques you can use to implement the data services tier.
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