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3-tier programming, Codebook, and business classes
Message
From
13/03/1998 13:26:53
 
General information
Forum:
Visual FoxPro
Category:
Classes - VCX
Miscellaneous
Thread ID:
00083772
Message ID:
00084528
Views:
43
>>Jim, I greatly appreciate this reply. It confirms that business objects use unbound controls (we had many UT discussions about bound and unbound approaches).
>
>Ed,
>
>Well one design approach does it this way (mine) :-).
>
>I actually have two framework models that I use, one if pure VFP and uses DE's controlsources and so forth. The other is N-Tier where I build teh UI, the middle tier objects, and the data store as separate entitites which can be mixed and matched at will.
>
>The chice of which model to use is purely based on the requirements of the project. I find that the pure VFP with data binding is simpler and easier to maintain and write, but the N-Tier model is much more flexible and scalable allowing a wide variety of front ends and backends to be integrated easily.
>
>If the project needs the flexibility and scalability then I use the N-Tier model. If it is a simple pure VFP solution then I use the pure FP model.

I like flexible solution so much that always use it (I don't daresay that it includes real business objects).
Edward Pikman
Independent Consultant
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