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From: aoki@postgres.Berkeley.EDU (Paul M. Aoki)
To: Mark Metson <gpurdy@fox.nstn.ns.ca>
Cc: postgres@postgres.Berkeley.EDU
Subject: Re: Use by a Business 
Reply-To: aoki@postgres.Berkeley.EDU (Paul M. Aoki)
In-reply-to: Your message of Mon, 30 May 1994 08:55:39 +0100 
	     <Pine.3.89.9405300812.B357-0100000@acamn.aca.uucp> 
Date: Mon, 30 May 94 12:40:03 -0700
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Resent-Date: Mon, 30 May 94 12:40:08 -0700
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Mark Metson <gpurdy@fox.nstn.ns.ca> writes:
> If I utilise postgres instead of Business Basic to rewrite the
> package, where would we stand regarding postgres license?

  Permission to use, copy, modify, and distribute this software and its
  documentation for educational, research, and non-profit purposes and
  without fee is hereby granted, provided that the above copyright
  notice appear in all copies and that both that copyright notice and
  this permission notice appear in supporting documentation, and that
  the name of the University of California not be used in advertising
  or publicity pertaining to distribution of the software without
  specific, written prior permission.  Permission to incorporate this
  software into commercial products can be obtained from the Campus
  Software Office, 295 Evans Hall, University of California, Berkeley,
  Ca., 94720.  The University of California makes no representations
  about the suitability of this software for any purpose.  It is
  provided "as is" without express or implied warranty.
 
offhand, i'd say if someone's making money from the construction
of a system, you should talk to the licensing people (just to be 
safe).

personally, i would not sell a package to a client that contained
postgres (or university ingres, for that matter -- i once told the
last ingres chief programmer about a product that had ingres89
embedded in it and his reaction was priceless).  i'd get a 
commercial database.  (but then, i'm the sort of person who'd say
that if my paycheck was on the line, i'd use bsd/386 instead of 
linux, too..  i like linux, but.. :-)

> Primarily we
> need record-locking; it appears ingres and metalbase do not provide this
> (at least for isam type databases) whereas postgres does.

nope, postgres doesn't do record locking either.  it does actually 
have a multilevel escalating lock manager built in, but it isn't
used at the record level.  it does do page-level locking for b-trees 
but not for r-trees and heaps.

(montage has page-level locking for heaps.)
--
  Paul M. Aoki  |  CS Div., Dept. of EECS, UCB  |  aoki@postgres.Berkeley.EDU
                |  Berkeley, CA 94720           |  ...!uunet!ucbvax!aoki

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