VS2005 VB.net how 2 users updating same record from DataGrid handl   

Hello

When using VS2005 VB.net when 2 users are using the same application that 
has a form with a DataGrid control on it and they both update the same record 
on their local dataset, when they go to update that same record on the 
database how does updating the same record on the database handled?

date: Fri, 21 Sep 2007 11:36:02 -0700   author:   winlin