>Review your business rules and determine if your RI needs to change or not. >The next question would be, if they are truly child records, why do they >need to exist without a parent record? What purpose do they serve? What >information does the parent record contain and what information is stored >in the child records? Changing RI may force you to validate your code >throughout your app where insertions, updates, and deletions are processed.

my exactly point was not changing the RI, just like a "truncate" command that exists on another database, but i asume now it's not possible. Thanks for your time i really apreciate it.