This and similar projects use P2P LANs. The SQLExpress database will be intsalled on a share of a Windows7 machine and the LightSwitch client installed on other Windows7 machines will use a connection string to use the database.

That's the architecture I have to work with. So where things are at for me right now I am looking at creating a Role that does not allow delete and I will add users to that role. If that's the best I can do that will have to do.