Tutorial 5 - Visual Studio 2008, Linq to SQL, C#, and WPF

[davidjmckenzie]

shouldn't the business layer be a 'class library project' and not a wpf project? From what I can see here, you are going to be using it as a class library (from a 3 layer application pattern design?).

[jsampat]

Just wondering - What happens if you have data in those tables, and you want to adjust the size of the fields or add new fields ? If you drop a table wont the data get deleted ?