Path: utzoo!attcan!uunet!decwrl!sdd.hp.com!zaphod.mps.ohio-state.edu!tut.cis.ohio-state.edu!uc!cs.umn.edu!sctc.com!endrizzi
From: endrizzi@sctc.com (Michael Endrizzi )
Newsgroups: comp.databases
Subject: Re: Support for imprecise data: survey
Message-ID: <1990Aug1.152432.7861@sctc.com>
Date: 1 Aug 90 15:24:32 GMT
References: <26231@usc.edu> <2060003@hpcuhc.HP.COM>
Organization: Secure Computing Technology Corporation
Lines: 29

And the war starts.....

dhepner@hpcuhc.HP.COM (Dan Hepner) writes:


>This topic was discussed here a while back under the subject heading 
>"Fault Tolerant information recall", or something like that.

>Your title for this field of investigation is superior.


Fault Tolerance: A list of faults that will be tolerated and the 
post-fault level of service for each fault. The process of tolerating
a fault consists of 3 steps: fault detection, isolation, and recovery.

Fault Tolerant Information Recall:

	1) Tolerates syntatic faults in databases
	2) Post level of service guarantees data that is
	   syntatically "closest" to query.
	3) Fault-Detection: implicit and assumed
	   Fault-Isolation: ???
	   Fault-Recovery:  Query always returns with "best" answer 
		            available.

Can I see your definition of fault-tolerance mr. hepner??
Then we can talk.

				Dreez