HP3000-L Archives

November 1999, Week 2

HP3000-L@RAVEN.UTC.EDU

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Subject:
From:
Sletten Kenneth W KPWA <[log in to unmask]>
Reply To:
Sletten Kenneth W KPWA <[log in to unmask]>
Date:
Wed, 10 Nov 1999 15:41:57 -0800
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Several people have replied to a query from Johan Beghein
about ODBC drivers:

There are four established choices that I am aware of for
32-bit ODBC access to IMAGE databases:

(1)    ODBCLink/SE, which is bundled by HP with Image/SQL
(but NOT with TurboIMAGE:  You must purchase / upgrade
to Image/SQL).  M.B. Foster and HP collaboration.

(2)    The LINKWAY driver from CSL in U.K. (distributed in North
America by Biznettech LLC).  Uses Image/SQL.

(3)    ODBC/32 from Minisoft .  Supports direct TurboIMAGE
access (Image/SQL not required).

(4)    Data Express from M.B. Foster.  Incorporates full ODBCLink
functionality.  Supports direct TurboIMAGE access (Image/SQL
not required).


A couple things to be aware of:

(1)    The "SE" in ODBCLink/SE stands for "Special Edition".  It
is probably most appropriate to consider it as a "Subset Edition";
i.e.:  The SE version is SINGLE THREADED.  While YMMV, sites
that are considering heavy use of ODBC access to their IMAGE
databases by a large number of users are advised to seriously
consider purchasing one of the three above commercial drivers.
The performance differential can be significant (again, YMMV;  it's
hard to make a completely general comparison that would apply
equally to all sites).....   ODBCLink/SE has one big advantage:
It's "free" (note quotes) if you already own Image/SQL (for which
HP charges additional software support fees compared to
TurboIMAGE).

(2)    If you are planning to do more than "vanilla" ODBC access
to your IMAGE data (either direct or via Image/SQL);  i.e.:  ASP
(active server pages), etc.:  You may want to get a demo version
of one or more third-party ODBC drivers and try it / them out in
your environment, to make sure they will do what you want with
acceptable performance....


There are certainly other alternatives besides ODBC for client-
server access to TurboIMAGE data, but since the original query
was focused on ODBC I didn't try to extend beyond that for now...

Ken Sletten
SIGIMAGE Chair

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