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  2. RPG400-L
  3. April 2002

Separation of Presentation, BL, and I/O Tiers

Hello all,

I am trying to define what would be required to separate our presentation
from business logic, from database I/O and would like your opinion on some
issues. Any input would be greatly appreciated.

1) How do you feel about physical file constraints to provide some field
validation?
2) Does field validation belong in the database tier or the business logic
tier?
3) What is the most advantageous method of data transport (Data Structures,
Data Queue, Trigger)?

I realize that these questions are quite broad and probably the most
obvious answer is 'It depends'. But what I'm looking for is options based
on personal experiences

Thank you very much.

Mark


Mark Walter
Sr. Programmer/Analyst
Hanover Wire Cloth a div of CCX, Inc.
mwalter@hanoverwire.com
http://www.hanoverwire.com
717.637.3795 Ext.3040

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