How To Write Code Using 3 Tier Architecture
Jan 6, 2010Presently I am working using single tier architecture. Now I am wanting to learn how to write code using 3 tier architecture.
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Nov 24, 2010find a free 3-Tier Code Generator for asp.net .
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Dec 25, 2010recently i've studied on ADO.NET's Entity Model Framework and say 'wow' as ORM is one of the fevourite pattern i practice..but suddenly i've come to an ambiguous situation when i'm going to start. i usually follow the following 3-tier architecture..
1. UI Layer
2. BLL - business logic layer
3. DAL - Data Access Layer
a. DTO / DAO
b. Gateway (contains the sql query/stored procedure and connection with DB)
now when i'm going to use the Entity Model Design,where the DBML/ .edmx File should be placed? Because many a times i'm using the DBML file as DTO because of the mapped objects.. in the same time, sometimes DBML ( .edmx file in .NET 4.0) contains CRUD methods and stored procedured method as well as methods with different selection operations,- which should be in Gateway. so where the .edmx file should be placed !?!! IN DTO namespace !? or in Gateway namespace!
moreover sometimes there is no need for the BLL which breaks the rules of inter-layer-communication (UI > BLL > DAL.Gateway)! what makes me confuse is, what should be the ideal n-tier architecture when i'll use the ADO.NET Entity Model Design Framework
Architecture :: Asynchronous Page Processing In 3 Tier Architecture?
Jul 30, 2010I am working on 3 tier architecture: UI, BL, DAL. In my UI i have following code for Asynchronous page processing:
[Code]....
But I want a database fetch operation to be performed in this asyncronous method. And due to 3 tier arch. i am unable to do this in UI Layer. Can anyone guide me that how can I implement Asynchronous processing in 3 tier architecture? Note: If you are going to place EndAsyncWork1 in DAL then show that how can I return a value back to UI layer from this function.
[Code]....
Architecture :: What Is The Difference In 3-tier Architecture And Gereral Way Of Programming
May 20, 2010I want to know that What are the factors if we use methods on each .cs page for connection and executing query on each aspx code behind page rather then using BAL .
How our application get affected in terms of performance and speed or other way?
when we put our website on server after publish/compile in general approach (using query in C# code behind) rathor than using stored procedures?
then which logic is better and why ?
Architecture :: Function Implementation In 3-tier Architecture?
Apr 28, 2010I have implemented the 3-tier architecture project; DAL, BAL, and presentation layer are three layers in it. I am going to implement the following scenario:
Presentation layer calls to a function in the BAL layer which returns 2 string variable, and in turn this function from BAL layer calls to a DAL layer function which also returns 2 string variable. How can I implement the above scenario?
Architecture :: Exception Layer In N-tier Architecture?
May 13, 2010I'm developing a n-tier architecture... I'm confused with handling exception in the layers... Is it a good practise to add a Exception Layer to the architecture.
View 3 RepliesArchitecture :: Design Pattern And Tier Architecture
Jun 12, 2010I am a newbie to asp.net and work in a firm where the projects are quite small.
I was told by my manager that in a few weeks or so we would be getting a bigger project and I need to be well versed with Design Patterns and N tier arcihtecture.
I would really appreciate if someone could provide me some links and also drop me a few sentences on how this things are useful?
Architecture :: Trying To Use A 3-tier Architecture (UI, BAL & DAL) For Project?
Nov 30, 2010I am trying to use a 3-tier architecture (UI, BAL & DAL) for my project. I have each of the tier in different physical machines.
UI - Machine 1
BAL - Machine 2
DAL - Machine 3
How can DAL & BAL interact? What would be the best way to call one component from another?
Architecture :: How To Create 3 Tier Architecture
Mar 29, 2011I was tasked to create 3 tier web application. However, i browsed through many books & tutorials. The examples are doing it using Object data source which my lecturers claimed that it is not 3 tier at all. Shouldn't be dragging any data source into deisgn view. Any comprehensive examples for me to take reference from?
View 4 RepliesArchitecture :: How To Develop An App Using 3 Tier Architecture
Aug 18, 2010i want to develop an application in asp.net using 3 tier architecture .
i know that there are three layers
Data layerBusiness Layer
Data Access LayerBusiness Logic Layer Presentation Layer. I am confused between Data Access Layer and Business Logic Layer.
In data access layer we develop the property classes and main class function which returns datasets, datatables and data reader to Presentation layer.
what is the use of Business Logic Layer ? what actually we do in Business logic Layer
?? we can pass data directly from data access layer to presentation layer ?
Architecture :: Namespace 3 Tier Architecture?
Feb 5, 2010i am in the process of creating 3 tier architecture for ASP.net with Microsoft Studio 2005.
My architerture is as below
Presentation Layer Business Logic Layer Data Access Layer
-------------------------- --------------------------- -------------------------------
Form1 BLTable1 DaTable1
(NameSpace = MyCompany.MyProject.BL. BLTable1) (NameSpace = MyCompany.MyProject.DA. DaTable1)
Form2 BLTable2 DaTable2
(NameSpace = MyCompany.MyProject.BL. BLTable2) (NameSpace =
MyCompany.MyProject.DA. DaTable2)
Form3 BLTable3 DaTable3
(NameSpace = MyCompany.MyProject.BL. BLTable3) (NameSpace = MyCompany.MyProject.DA. DaTable3)
I have 2 question here:
(1).MSDN say that we should not have the namespace where its name is same with class name but it does not exlpain why.Does anyone know why? The msdn page is
http://msdn.microsoft.com/en-us/library/893ke618%28VS.71%29.aspx
(2). Business Logic Layer BLTable1 need to interact with Data Access Layer
DaTable1 , so i put the code: imports MyCompany.MyProject.DA. DaTable1 inside
BLTable1, so that i can have access to all the public shared method inside
DaTable1 in BLTable1 for example : DaTable1.Save()
But problem arise when BLTable1 want to use the public shared method in BLTable2 .
I have put the code imports MyCompany.MyProject.BL. BLTable2 inside BLTable1,but i need to
key in the class name twice only can access to the public shared method inside
BLTable2 for example :BLTable2.BLTable2.Save.
Architecture :: How To Create 3-tier Architecture
Sep 16, 2010structure of 3-tier architrcture
View 7 RepliesArchitecture :: Implement N-tier Architecture?
Feb 19, 2011some link of some articles for learning N-tier architecture ....
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View 6 RepliesWhat Is Tier Architecture And MVC
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View 3 RepliesHow To Develop 3 Tier Architecture In Asp.net Using C#
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What Is The Difference Between N-Tier And SOA Architecture
Aug 15, 2010As per my understanding regarding N-Tier and SOA architecture.
N-Tier
N-Tier means dividing application into layers, Example I am developing application in asp.net and I pushed total DB Layer to WCF then it is called N-tier.[Tightly coupled]
SOA[Loosely coupled]
As per my understanding regarding SOA its very generic term and how well we going to loosely couple our architecture then its called SOA. Best example for SOA services - Stock feeds/ weather feeds.
My conclusion:
Even though if we develop application using WCF it does not mean its SOA if it is tightly couple with single client/ or .net applications only can understand about services.
Can you help me in understanding of SOA VS N-Tier.
ADO.NET :: Connectionstring In 3 Tier Architecture?
Aug 12, 2010In 3 tier architecture where to keep connection string? I have presentation layer ( webapplication) and BAL Layer ( class lib) and DAL (class lib).intially i kept in web.config which is in presentation layer....is it correct?should i keep a app.config file in DAL layer and keep my connection string in that?Where to keep connection string ?
View 1 RepliesHow To Implement Three Tier Architecture
Jul 12, 2012I would like to implement 3 tier arch in my project. What is the best and optimized 3 tier architecture in asp.net..
View 1 RepliesWeb Forms :: N Tier Architecture Using WCF
Jun 1, 2012My application was designed using following n-architecture : Presentation layer...wcf service layer...business logic layer..data access layer Presentation layer is in one server,wcf service,bll,dal are in another server. I knew something about wcf but how to implement this architecture.
I am looking for code sample for the above type of architecture.
Finding Types Of Tier Architecture?
Dec 28, 2010How many tier architecture are there for ASP.NET?I know only one that is three tier architecture.Can anyone tell briefly about 4 tier architecture and other tier architecture?
View 6 RepliesHow To Use Of Business Layer In 3-tier Architecture
Jan 27, 2011I am implementing 3-tier architecture. I just wanted to know the role of business layer in 3-tier architecture.
I am developing application in using entity framework. So I have entity object which is accessiable in PL,BL & DL. My question is whether input assignment to entity object should be in PL OR BL.(Consider there is save method)
C# - N-tier Architecture With WCF Session State?
Jan 18, 2011I'm developing one of my personal projects and I found some problem.
It's an n-tier architecture:
Framework.
WCF Framework service.
ASP.NET control that connects to the WCF Framework services in the server-side.
ASP.NET client hosting that control.
WCF service is in ASP.NET compatibility mode.
What's the problem? Each request is in a different session. I found that because stored values for sessions are reseted in each request, as I stated before.
I've two questions then:
1) - Someway obvious but I want a confirmation - Does the fact of calling WCF Framework services in server-side mean that the session is for the server and not per client?
2) Is first question fact the reason of getting a new session after each request?
In the end, I'm about of disabling ASP.NET compatibility mode for that WCF Framework service and develop my own session state management, which isn't a hard task, but I'm not a friend of reinventing wheels.
Difference Between Three Tier And Three Layer Architecture?
Feb 12, 2011whats is the difference three tier and three layer architecture. I need three tier architecture which is fulfill the object oriented requirement. and database change flexibility.
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