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What is the concept of three-tier architecture?

Anonymous User 3386 15 Oct 2010
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Updated 07 May 2023
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Aryan Kumar
Aryan Kumar 07 May 2023
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Three-tier architecture is a software architecture pattern that separates an application into three logical layers, each of which is responsible for specific functionality. The three layers are:

  1. Presentation layer: This layer is responsible for presenting the user interface to the user and receiving input from the user. It typically consists of a web server, application server, or client-side application that communicates with the application's business logic layer.
  2. Business logic layer: This layer contains the application's core functionality and rules. It processes requests from the presentation layer and returns data to the presentation layer for display to the user. It may also interact with data storage systems, such as databases or web services, to retrieve or store data.
  3. Data storage layer: This layer is responsible for storing and retrieving data used by the application. It may include a database server or file storage system.

The three-tier architecture provides several benefits, including:

  • Scalability: Each layer can be scaled independently of the others, allowing the application to handle increased user load as needed.
  • Flexibility: Changes to one layer do not require changes to the other layers, allowing developers to modify and update the application more easily.
  • Separation of concerns: Each layer is responsible for a specific set of tasks, which promotes a clean separation of concerns and improves maintainability.

Overall, the three-tier architecture is a popular choice for building scalable, flexible, and maintainable applications, and is widely used in web-based applications and services.

Anonymous User
Anonymous User 10 Nov 2010
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A three-way interaction in a client/server environment, in which the user interface is stored in the client, the bulk of the business application logic is stored in one or more servers, and the data are stored in a database server.Three-tier architecture is a client–server software architecture pattern in which the user interface (presentation), functional process logic ("business rules"), computer data storage and data access are developed and maintained as independent modules, 

In computing, Three-tier is a client-server architecture in which the user interface, functional process logic ("business rules") and data storage and data access are developed and maintained as independent modules, most often on separate platforms. The term "three-tier" or "three-layer", as well as the concept of multitier architectures, seems to have originated within Rational Software. 
Uttam Misra
Uttam Misra 30 Oct 2010
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Presentation(User Interface), business (logic and underlying code) and data (from storage or othersources like MSSQL Server, MY Sql, Oracle).
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