How to create 3-tier architecture

Question

User-566393114 posted

structure of 3-tier architrcture

Answer 1

User-1802908944 posted

these should be three layer:

Presentation Layer

Business Login Layer

Data Access Layer

http://www.dotnetfunda.com/articles/article71.aspx

Answer 2

User1480033891 posted

Hi,

In essense,

Presentation Layer is your web page where you display information which may include a submit button, when clicked page is submitted to the server.

Business Logic layer is you server side code (Page class or separate file) which processes inputs from the submitted page.

Data Layer - this is also a separate class that accesses your database (ADO.NET) normally called by the your business Logic Layer. 

I hope this makes sense.

 

 

Answer 3

User-1199946673 posted

http://imar.spaanjaars.com/476/n-layered-web-applications-with-aspnet-35-part-1-general-introduction 

Answer 4

User-952121411 posted

structure of 3-tier architrcture

 

Wow that is brief!

By tier I think you might mean layer, but regardless here is some help for both scenarios.  A traditional 3-layer application consists of a UI (or Presentation) layer, the Busniess Logic Layer, and the Data Access Layer.  These are 'logical' layers that could actually exist all on a single server.  When you being separating layers onto thier own machines, that is when they become 'tiers'.  Adding tiers to an architecture is much more expensive than adding layers in general due to the extra domain calls required.

Here are some links that might help you understand some more in depth including code examples:

3-tier Architecture with ASP.NET 2.0:

http://msdn.microsoft.com/en-us/library/aa581769.aspx

Building an N-Tier Application in .NET: 

http://msdn.microsoft.com/en-us/library/ms973279.aspx

Creating a UI-BLL-DAL:

http://www.asp.net/data-access/tutorials/introduction

N-Layered Web Applications with ASP.NET 3.5 Part 1: General Introduction:

http://imar.spaanjaars.com/476/n-layered-web-applications-with-aspnet-35-part-1-general-introduction

Next, to help with understanding the difference between tiers and layers.  The following links will help with this:

Should all apps be n-tier?

http://www.lhotka.net/WeBlog/PermaLink.aspx?guid=efa88d0a-2388-4909-bee1-c9bddb6e9868

A variety of physical n-tier options:

http://www.lhotka.net/weblog/AVarietyOfPhysicalNtierOptions.aspx

 

Answer 5

User-1392959185 posted

http://forums.asp.net/t/1071505.aspx

Answer 6

User-1989030018 posted

How do we transfer data from presentation layer to business logic layer??

Answer 7

User-952121411 posted

How do we transfer data from presentation layer to business logic layer??

I will give a brief answer to a generally abstract question (not a problem, but please add specifics if you had anything in mind already); create an instance of a business object from your BLL and pass it back.  Pass objects or objects boxed as their Interface type if using a design implementing interfaces.