3 Tier architecture in mvc4

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Hi,
I am learning mvc4 using 3 tier architecture . I am creating a simple application with visual studio 2012 and sql server 2012.
I have created a project add in this project i have added two more project which are DAL (data access layer) & BLL (business logic layer).
now i am confused which code should I write in which part.
where should i use model class, controllers and specially what code should i write in BLL.

Plz tell me what to do.
Thankyou

Posted 20-Jan-14 19:53pm

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Christian Graus · Accepted Answer · 2014-01-20T21:47:00

The presentation layer is your MVC project. MVC includes models and viewmodels, which can make this sort of thing confused. In theory, your business layer handles all the business logic, and the database handles getting data from the DB and storing it there.

I'm not sure how far I'd go with n tiered in MVC, although I would seek to write a data layer, I think the business rules will be hard to factor out, unless your models also come from your business layer ( which they can do, of course )