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Questions tagged [3-tier]

For issues relating to setting up and utilizing a 3-tier architecture.

3-tier is a software architecture in which the presentation layer, business access layer and data access layer are developed and maintained as independent modules, sometimes on separate platforms.

370 questions
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What is 3-tier in simple definition and advantages?

I am working on converting my one page to 3 layers. I believe advantages were that it was more organized. I am getting confused as what's happening since I have 3 layers now and I realized I don't have a clear understanding of what 3-tier is. This…
healxph0enix
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How to implement three tier architecture in windows phone while calling web services

Recently i worked on integration of sharepoint windows phone. I used web services provided by sharepoint for the communication. Form there i came to know that windows phone supports only Async calls to the webservices, which start executing…
Mohit Leekha
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SSL issue on 3 tier architecture

We are setting up an Angular/MVC web application on our client's infrastructure where they have several stringent security policies. We have web / App /DB in 3 separate VMs running on windows. We have installed self-signed SSL certificates on Web &…
Srigk
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Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. While fetching records from database

I have many users on my web site (2000000 per day) in my database, While fetching data from database im getting above error. I've received "Server is unavailable" errors before, but am now seeing a connection timeout error. I'm not familiar with…
Tech_Delhi
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Unable to update stored procedure in to 3 tier architecture in code first

I have an existing project which is developed into 3-tier architecture pattern. It has BLL and DAL .dll files in reference. Now I want to access a new Stored procedure which already created in ssms to use in this project. I create a method in to…
Chetan Pandey
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3-Tier Architecture MVC 4 Project

I am working on a Web Application using ASP.Net MVC 4 3-Tier Architecture and I am stuck at certain points. I know here exist similar threads but none were clear enough. I have already created the needed layers which are UI(MVC4 project), BLL-…
user2217303
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Service layer is a outer layer or not? If not then it come under which layer?

Service layer is a outer layer or not? If not then it come under which layer? Please reply Thanks
Abhineet
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Security in 3-Tier applications: in which layer?

By "security" I mean data access rights, for example: Andrew only has read-only access to clients in France Brian can update clients in France and Germany Charles is an administrator, he has read and update rights for everything I can see…
smirkingman
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I do not know what is wrong with my function

I have this code. However I am not able to run it as a function. def verify_result_same(): if verify_result_same.is_identical() & verify_result_same.confidence() > 0.5: face_client.face.verify_face_to_face(source_image1_id,…
Rifaye Ibrahim
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Is it incorrect to use classes from System.Net and System.Net.Http in the business logic layer?

In the business logic layer of our ASP.NET Core application, we're sending a POST-Request to an external API using System.Net.Http.HttpClient. Is the business logic layer considered the wrong place to use classes from System.Net and System.Net.Http?…
dario
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C# - 3 Tier Architecture. Error says No overload for method name takes 0 arguments

I am using 3 tier architecture in my C# Window Form. The thing I want to do is, hide the button if the data is exists. Here are my codes. Class File public bool checkIfExists(Variables variables) { // BelPar SqlCommand check = new…
mark333...333...333
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Couldn't call server side method using Ajax

I am using 3-tier architecture for demo application. I am trying to call business logic layer method from presentation layer using Ajax. But It is showing error. I think there is some mistake in passing url. Here is the Ajax call from Index.aspx…
Vivek
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Business layer, presentation layer, Data layer

I went through and spent all my time on almost all links and sources about these topics: BUSINESS LAYER, PRESENTATION LAYER, DATA ACCESS LAYER. But still i don't understand it because different sources, different usage, it confuses me a lot. Now…
user3432348
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error while deleting row in gridview via 3 tier

Object reference not set to an instance of an object. This is the error which i m getting while i trying to delete .. row from my grid view this is in .. page_ load gvDetails.DataSource…
user2473216
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Why i got this error ? No connection string named '' could be found in the application config file

I have a DAL project using entity framework. I refer the project into BAL project, when i execute the BAL project. i got the error like "No connection string named 'StudentEntities' could be found in the application config file." Then i copied…
user2384352
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