I have table Employee have two fiels
EmployeeID
EmployeeName
And i have two useres A,B
User A changes EmployeeName from michel to morinio when EmployeeID=5
User B need to change EmployeeName from michel to polo when EmployeeID=5
so that it must have message error tell him please wait there are another user changes in EmployeeID =5
this is exactly what i need
i need to do that using timestamp data type
how i do that