Chris and the HP3000 List Members:

 

Although HP-Eloquence supports an underlying b-tree index that provides

sorted sequential access, it does not provide some of the richer types

of indexing supported by Omnidex such as keyword retrieval within a

field, fast multiple column retrieval and pre-joined tables.  And

although there are several organizations that may want to stay with the

"supported" index choices of an underlying database, Oracle has taken a

decidely different approach.

 

Oracle has mainstreamed the concept of "extensible indexing" in which

they have built hooks to their SQL optimizer to better facilitate third

parties in creating add-on indexing.  The Oracle docs talk specifically

that Oracle provides only a baseline of index functionally.

Interestingly enough, the indexing capabilities of Oracle are probably

an order of magnitude in their capabilities and scalability beyond

HP-Eloquence.  One of the examples that Oracle uses in both their Oracle

8i and 9i documentation is an example of the need for extensible

indexing is a keyworded/inverted index system similar to that in use by

Omnidex.

 

So certainly in my humble opinion, additional indexing such as Omnidex

will be necessary for HP-Eloquence applications and that opinion is also

shared by the not so humble Oracle and Larry Ellison :).

 

Terry O'Brien

Executive Vice President

Dynamic Information Systems (makers of Omnidex)



	-----Original Message----- 

	From: Chris Thompson 

	Sent: Mon 5/6/2002 5:16 AM 

	To: [log in to unmask] 

	Cc: 

	Subject: Re: [HP3000-L] Eloquence + Omnidex (inspired by: HP3000

and HP-UX)

	

	



	In article <[log in to unmask]>, David T Darnell

	<[log in to unmask]> writes

	>So is DISC going to support (Classic) Omnidex on Eloquence?

	>

	>-dtd

	>

	>* To join/leave the list, search archives, change list

settings, *

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http://raven.utc.edu/archives/hp3000-l.html *

	>

	

	David,

	

	AFAIK HP-Eloquence is a fully indexed DB structure which

obviates the

	need for additional indexing. It would seem therefore that the

DISC

	software would be superfluous in an HP-ELoquence environment -

perhaps

	Michael Marxmeier will be able to confirm this.

	

	Also it is worth noting that an HP-Eloquence database doesn't

have the

	migrating secondaries problems since hashing has been replaced.

	

	Chris

	

	--

	Chris Thompson

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