For more information on the topics discussed in this chapter, consider perusing the following online resources:
"An Extensive Examination of the DataGrid Web Control: Employing Simple Editing" http://aspnet.4guysfromrolla.com/articles/071002-1.aspx
"DataGrid In-Place Editing" http://msdn.microsoft.com/msdnmag/issues/01/06/cutting/cutting0106.asp
"The Calendar Web Control" http://samples.gotdotnet.com/quickstart/aspplus/samples/webforms/ctrlref/webctrl/calendar/doc_cal.aspx
"Referential Integrity in SQL Server" http://www.sqlmag.com/Articles/Index.cfm?ArticleID=8687
"An Extensive Examination of the DataGrid Web Control: Editing Data with Foreign Keys" http://aspnet.4guysfromrolla.com/articles/080702-1.aspx
"Additional Criteria in the JOIN Clause" http://sqlteam.com/item.asp?ItemID=11122
"Server Control Form Validation" http://docs.aspng.com/quickstart/aspplus/doc/webvalidation.aspx