> Was just reading this webpage:
>
> http://www.cvalde.net/document/mysteriousDbKey.htm
>
> Is it safe to use this field these days (page not been updated since
> 2000).

Yes.

> Ie for checking in a .net provider dataadapter that a record
> has remained unaltered.

No.
Updating record does not change its rdb$db_key ...

Ivan