3 Tier

I have this curiosity on developing this 3 tier architecture on how I'm going to populate the data for my combo box and my other text box for my application. Do I need to get it from the business layer which is taking from a data layer. Can I skip a layer and just get it from a data layer. Or, can I just make a data enviroment in my application layer to set all the data.


Thank you.

You have to decide why you want a 3 tier architecture. Yes we can all call the data directly, but is that scalable? 3 tier gives you scalability, do you need that? If you have user services, business services and data services encapsulated, you can change them independently from one another, if you call everything from your form, then you must analyze all the code to do changes. What I think is best with data services is, that, if you design it generically, you would be able to change your data access components without changing the rest of your app.

Good luck,

Andre

Andre...or anybody
If you can help me out...I attached a zip file that contain my data layer and business layer.....can you tell me how can I populate data for my combo box in my application layer....what should I do in my business layer.


Thank You