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Application Development Using Visual Basic® and .NET by Dana L. Wyatt, Peter Thorsteinson, Robert J. Oberg

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Working with DataSets

Figure 13-6 depicts the hierarchy of classes that exist within the DataSet class. The shaded boxes represent collection classes. It will be helpful to glance at this diagram over the next few sections that discuss these classes.

Figure 13-6. DataSet class hierarchy.

Multiple Tables in a DataSet

Each DataSet has a collection of one or more DataTable objects. Each DataTable object represents one table.

With a SelectCommand that contains a join, you can place data from multiple database tables into one DataTable. If you want to update the multiple tables, you will have to specify the update commands, because all relationship ...

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