>Hi keith,
> I create diffent view for optimization. example I have viewA and (viewB+Index). with both the same source table. I want to use ViewA for update. so I update ViewA still i got an error. Does it means i can no longer use any VIEWS?
>tnx

Sure you can. Just make sure that you are retreiving the primary key(s) for each table in the view that will be updated. Also from SQL BOL:

"The DELETE, INSERT, and UPDATE statements can reference a view as long as SQL Server can translate the user's update request unambiguously to updates in the base tables referenced in the view's definition."