RE: Search over referrals (Re: LAST CALL: draft-ietf-ldapext-ref erral-00.txt)

[Alan Lloyd <Alan.Lloyd@OpenDirectory.com.au>]

> -----Original Message-----
> From:	dboreham@netscape.com [SMTP:dboreham@netscape.com]
> Sent:	Tuesday, April 07, 1998 12:46 AM
> To:	Alan Lloyd
> Cc:	ietf-ldapext@netscape.com
> Subject:	Re: Search over referrals (Re: LAST CALL:
> draft-ietf-ldapext-ref		erral-00.txt)
> 
> Alan Lloyd wrote:
> 
> > Thanks for the question.
> > We do not distribute indices/indexes - no need.
> 
> OK, different discussion.
> 
> > The DXserver design is subject to patents re the rdb design. Its a
> > question of using primary keys and logical indexes for the X.500
> stuff
> 
> <snip...RDB advocacy comments>
> 
> > directory info into filespace ie. Lost all the effort by the global
> > vendors of RDBs - which are essential for large scale, high
> integrity
> > business (distributed) information systems.
> 
> Eh ?
> 
> Directory Vendors are free to use whatever database
> technology they please in their products. Heck, we even
> designed ours so the database technology can be changed
> by the customer. But I'm struggling to see how this
> affects distributed search, and even more what it has
> to do with LDAP ! I need some more education.
> 
	Its just the way in which one uses the DB that makes the
difference - on can store objects as rows, etc or one can be smarter.
	If one is smarter then one can determine what one has locally
and if one has to fire of a distributed search - I assume LDAP servers
do not do distribution so that is not a problem to them.

	Eg single server  - get me three things of type x in 1,000,000
entries, server has one thing of type x - server returns one x..
	distributed servers - get me three things of type x in 3,000,000
entries, server a has 1 x - and must fire off searches to server b and
c, etc. eg the database design is critical to distributed performance.

	 LDAP does not do this so no worries eh!

> Now: "directory info into filespace" ?
	This was meant to say that RDBs are used for corporate info and
that directories will underpin corporate systems - however some
direcories use good old filespace - as they just deal with mail
addresses.

	Its an integrity issue re how the directory is applied. in the
business.


> I need that one decoded please.
> Do you mean that folk are moving away from
> using raw volumes for RDB's storage ?
> Or someone ships a directory product which
> stores each entry as a separate file ?
> Or what ?
> 
> 
	regards alan