Stevio,
What are you coding in and what components / data access are you using. To
know that updates are safe you either have to use transactions or using the
BDE updateWhereAll option.

More info, better answer ;-)

Jason Chapman
JAC2 Consultancy

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<redeagle@...> wrote in message
news:00ac01c23a12$60f9c840$0300a8c0@......

> I have a problem which I'm sure many of you must have dealt with.
>
> I have the problem where two users can open the same record at about the
> same time, one user could then update the record and then the other user
> could also update the record. The first user's changes will be lost or
> overwritten by the second user.
>
> What I would like to happen is that the changes by the second user are
> rejected, or at the very least they are given a warning to say that this
> record has been updated since they opened it and do they want to go ahead
> with their changes.
>
> How do I do this? Can this be controlled through transactions?
>
> Stephen