>hi, Hector.
>
>thanks for your help.
>
>what is GUID values?
GUID stands for "Global Universal IDentifier" or something like that. It is a value that you can get via a call to Windows API that it is suppossed to be unique since it is generated based on several values from your computer + date/time.

You can generate GUID values on each workstation and assign them as your primary key to your views. Then when you commit them to the server, you can be 99.9999% sure that they will be unique even if another user added another record at the same time somewhere else.