OK.
Well Thanks for all the points of view. As I am just starting a new project
from the design up, it is a greate time to review my "favoured archetecture"
and decide on a new approach or not. Its a hard decision to make because,
there are several favoured strategies out being used by very experienced
people. Niether the Web approach nor the Corba/Sockets approach are familiar
to me, so I have a lot more work to do.
Again, thanks for the help.
-----Original Message-----
From: Kerry Sainsbury <[EMAIL PROTECTED]>
To: Multiple recipients of list delphi <[EMAIL PROTECTED]>
Date: Friday, 3 September 1999 8:05 AM
Subject: Re: [DUG]: Thin Database Components.
>That sounds pretty impressive. Are you using Corba or low level sockets?
>Corba of course has the disadvantage that it boosts some one else's bank
>account - probably to the detriment of mine. Is there a worthwhile margin
in
>using Corba?
CORBA does have a cost, but it's a darn sight easier to work with than
simple sockets. Working with objects makes CORBA attractive too. The way
that CORBA copes with state nicely is nice. Database pooling and easy to use
transaction context handling is a nice feature too. I love not having to
define crud like "the name of the machine the server is connected to" --
Clients just say "help, I need to find an order server somewhere".
One of the very important things about n-tier development is that it forces
developers to clearly define the interface between their UI and their
business logic, that means that reusing the business logic is now *simple*
because the developers *can't* write the business logic underneath a Form's
OnClick event (where nobody else can get at it).
So, in addition to the HTML client I used for the order processing example,
you could develop a nice Win32 client in Delphi, or you could generate
orders from (say) an XML file emailed daily from your branch in
Waihangamoocow -- all using the same business logic server. Just lovely :-)
...plus all the things Nic listed.
EJB is making things even easier -- the idea that I don't have to cut any
SQL at all to get objects in and out of the database is rather appealing.
Cheers,
Kerry S
PS: I'm not saying this just because I'm an Inprise employee now - it really
is pretty sensible.
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