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mathieu_cuprykFlag for Canada

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Creating a 4 tier application.

I have the folliowing:

Create separate projects for all layers BO, BAL, DAL, UI.

How can I avoid circular dependecy. How will the layers be.

Example :
UI
|
BLL
|
DAL
========================================
and where will I reference the BO and the BLL and the DAL.
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ASKER

BO refernces nothign ?