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ASP.NET N-Tier Arhitecture? What it Means by That?

Posted on: July 13, 2009

Microsoft ASP.NET

Simple Description of ASP.NET 3 Layers Architecture

Layer 1 – ASP.NET Presentation Layer – Presentation Layer is responsible for displaying user interface to either programmer or end user. Programmer uses this layer for designing purpose and to get the data back and forth. In ASP.NET it includes ASPX pages, user controls, server controls and sometimes security related classes and objects.

Layer 2 – ASP.NET Business Layer – The Business layer works as a mediator to transfer the data from presentation layer. In the three tier architecture the data access layer is not made to interact with the presentation layer. The architecture in ASP.NET includes using SqlClient or OleDb objects to retrieve, update and delete data from SQL Server or Access databases and passing the data retrieved to the presentation layer in a DataReader or DataSet object, or a custom collection object. The Data layer gets the data from the business layer and sends it to the database or vice versa.

Layer 3 – ASP.NET Data Layer – The Data layer gets the data from the business layer and sends it to the database or gets the data from the database and sends it to the business layer. In ASP .NET it is an SQL Server or Access database. It can also be Oracle, mySQL or even XML.

These 3 layers plays an important roles on making the ASP.NET technologies fully functional including all ASP.NET hosting websites software.

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