>Hello all
>
>how to update the view which doesn't have a key field.any examples please.
>what should be the buffering value for this type of view.
>
>txs for any help

You can not reliably update a view whose source tables have no key field[s]. You have to have a way of uniquely identifying each record. You may be able to do this using a combination of fields. Unless you can do this, the buffering type is irrelevant.