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Design of a three tiered system
Message
From
02/09/1999 14:24:41
 
 
To
02/09/1999 12:12:13
Bruno Di Lalla
Bdl Computer Consulting
Greely, Ontario, Canada
General information
Forum:
Visual FoxPro
Category:
Client/server
Miscellaneous
Thread ID:
00260474
Message ID:
00260740
Views:
23
>
>First, I should tell you that we are looking at a very complex user interface (ie, page frames with many pages, grids, trees, etc...)

In that case, a browser may not be the way to go.

>At this time, I have no experience with interfacing databases with the Web but I am willing to learn if I find that's the way to go.

It doesn't matter if you go web or VFP front-end. You will need to use the same data access techniques either way if you go n-tier. You can't use the old "USE table, SEEK data" scenario. You also need a way to get the data from the middle-tier to the UI. There are several options including ADO, XML, arrays, strings, etc.

>In such a case, would I be using JAVA as the programming language for the front end? If so would this interface well with VFP COM objects in MTS? Would I need IIS.

If you went browser front-end, you could use vbscript with DHMTL *if* you can enforce IE as the browser. Otherwise, you're looking at javascript and limited DHTML. As for connecting to VFP COM objects, as long as the language supports ActiveX Automation via CREATEOBJECT() or a similar call, you can use it.

One of the nice things about MTS is that it takes care of all the DCOM stuff for you. You create a client install that sets it all up. No manual configuration.

>
>Any help would be much appreciated...and thanks for taking the time to reply to my initial inquiry.
Craig Berntson
MCSD, Microsoft .Net MVP, Grape City Community Influencer
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