Hour 20

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1:	While your application is running and a connection has been made to a data source, what happens if you delete the data source from the file system while you are navigating records? What about inserting or deleting records?
A1:	Nothing happens. The database file is not locked, so you can delete it. You can add and delete records because you are just interfacing with a DataSet. However, once you attempt to update the data source with the new DataSet, an exception will be thrown because the file cannot be found.
2:	Do you need a database to create datasets, tables, and records within the .NET Framework?
A2:	No, you can create an entire database during runtime using the .NET Framework classes.
3:	What is a table relationship and how is it handled within a DataSet?
A3:	A table relationship is an association of two tables in a parent-child relationship. Table relationships are contained within the DataRelationCollection object in the DataSet.

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