conversion from two-tier to multi-tiier architecure

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2 total messages Started by Serif Selcuk Thu, 17 Aug 2000 00:00

#1008

Author: Serif Selcuk
Date: Thu, 17 Aug 2000 00:00

13 lines
1278 bytes

Hi,
I have a two-tier accounting application I would l�ke to convert to
three-tier archecture using MIDAS. In my two-tier application I have several
identicaly structured databases (IB 5.5) each keeps the accounting data
belonging to a different company. When logging to application, user selects
which company he/she is interested and the application connects to that
company's database. The user might have several instances of the
application, each instance connected to different databases.

My question is how can I construct my application server so that different
clients will connect to different databases. It seems to me that when a
databases connection is made, all the clients use the same connection.
Serif

Re: conversion from two-tier to multi-tiier architecure

#1009

Author: Mark Cashman (TeamB)
Date: Thu, 17 Aug 2000 00:00

18 lines
1376 bytes

Hi, Serif!

It seems to me it might be easiest to have a separate RDM instance for
each company, and then just change which RDM you are using when the user
selects a new company.

What is not entirely clear to me is how to dynamically create instances
of the same class RDM on the middle-tier as needed for each company. If
you were to use CORBA, instance-per-client and single threaded might
make this easier. You will probably need to do some experiments with
what ever distribution technology you choose.

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