Greetings,

> "Jonathan van den Berg" <[log in to unmask]> wrote:
>
> >Although database level middleware is quick and easy to use for C/S
> >development, I believe that the above list should contain:
> >
> >   3) The "remote method" answer (which allows server developers
> to express
> >their database as a series of remote invocable methods, thus
> encapsulating
> >the physical data with a logical series of API's)
>

F. Alfredo Redo wrote:

> Good point.
>
> ...

Jonathan van den Berg wrote:

> >Very well said. I would add the concept of "privacy"...
> >Whether a database is normalized or not, it still is the
> semantic blueprint
> >for how data will be managed, and is not the business of the client to be
> >privileged to this blueprint.
>
> I.e., there should be a separation between the internal reference and the
> external reference.  In addition, we should strive for late binding (as
> late as our performance requirements will allow) and we should avoid
> hard-wiring too much.  These good software practices are necessary to
> fulfill your excellent requirements:
>
> >... This model has been used with MPE as the server engine
> >for both the database and the application server, as well as with UNIX.
>

Alfredo Rego wrote:

> "Has been used"?  I wish you had used the ACTIVE voice to reveal the ACTOR
> instead of having used the passive voice to HIDE the actor :-)
>
> Now that you have piqued my curiosity, allow me to ask: WHO has used this
> model "with MPE as the server engine for both the database and the
> application server, as well as with UNIX"?

Jonathan van den Berg writes:

Let me address Mr. Rego's curiosity. Premier Software Technologies, using
it's own process-2-process request/reply middleware has assisted numerous
companies in achieving this necessary tiering of application logic. The list
includes HP as well as a handful of NEW MPE centric organizations.  We
firmly believe in this model, and in particular the HP3000's strength as an
application server platform.

Premier actively supports a variety of middleware technologies (Premier RPC,
DCE, Entera, IONA) using an visual interface definition toolkit. The tools
allow organization's to define and track the definition of "services"
(formerly referred to as methods). This visual and logical abstraction
serves as the basis to generate the necessary "C" and "middleware" code used
to encapsulate any MPE application/date source. Our technology works
exceptionally well at encapsulating COBOL on the 3K and providing an
Active/X-COM object to the client developer.

This technology is used to allow real-time connectivity to any MPE source.
In addition it is used to facilitate the real-time communication between
separate processes on separate MPE machines (MPE as a client). Note: The
technology supports all version of MPE, all the way back to XL versions.

F. Alfredo Rego wrote:
>
> This whole topic is a great subject for the Database track at HP World in
> San Francisco.  I would be interested in including references to your work
> in my paper (which I will publish in Adager's web site in due course).  In
> addition, as I revise the historic "Database Dynamics" paper
> (which I wrote
> 13 years ago), I would like to update it with new material, such as yours.
>

I would be most happy to contribute. Would you like to schedule some time to
discuss our work, for this week perhaps? During meetings with CSY, last
month, they encouraged me to contribute a paper and presentation at HPWORLD.
I plan to. I do understand that the deadlines are passed; however I believe
that it is still possible to squirm my way in, we are a new company serving
the needs of the HP3000 community and I have been very busy launching the
latest marketing campaign.

> Good job!
>  _______________
> |               |
> |               |
> |            r  |  Alfredo                     mailto:[log in to unmask]
> |          e    |                                  http://www.adager.com
> |        g      |  F. Alfredo Rego                       +1 208 726-9100
> |      a        |  Manager, R & D Labs               Fax +1 208 726-2822
> |    d          |  Adager Corporation
> |  A            |  Sun Valley, Idaho 83353-3000                   U.S.A.
> |               |
> |_______________|
>

Regards,

Jonathan van den Berg
Premier Software Technologies
fon: 408-257-8757
fax: 408-253-1184
www: www.premiersoft.com