The Application Development Architectures


Based on the way, that you are implementing the presentation logic, business logic and database logic in your application, there are 4 development architectures.

  1. One-Tier Architecture / Monolithic Architecture
  2. Two-Tier Architecture
  3. Three-Tier Architecture
  4. Multi-Tier Architecture / Distributed Architecture
one tier architecture

1) One-Tier Architecture:

  • All types of logics (presentation logic, business logic and database logic) will be implemented directly within the form.
  • That means there is no separation of presentation logic, business logic and database logic.
  • This type of applications are not in the professional style.
  • There is no re-usability of business code and database code.
two tier architecture

2) Two-Tier Architecture:

  • The Presentation Logic and Business Logics are maintained separately.
  • The presentation logic is written in "Presentation Layer" and the business logic is written in "Business Layer" / "Business Access Layer".
  • Note: Here, the database logic also can be written in the "Business Layer" only, even though it‘s not a good manner.

3) Three-Tier Architecture

three tier architecture

  • The Presentation Logic, Business Logic and Database Logics are maintained separately.
  • This is recommended for the professional projects in the software companies.

4) N-Tier Architecture:

  • In the 3-tier architecture, the "UI and presentation layer" will be located in the client system; and "business access layer and data access layer" will be maintained in the server system.
  • Here, there is the requirement of a technology that allows us to connect "Business Layer" with "Presentation Layer". That technology is called as "Distributed Technology".
  • The following are the well-known and important distributed technologies:
    N Tier Architecture
    1. DCOM (Distributed Component Object Model)
    2. .NET Remoting
    3. Web Services
    4. WCF (Windows Communication Foundation)


1. DCOM (Distributed Component Object Model)

  • It is in usage, before .NET.
  • It is platform dependent.

2. .NET Remoting

  • It is introduced in .NET Framework.
  • It is platform independent.
  • It is suitable for the windows applications that run on LAN or intranet.
  • It supports TCP and HTTP protocols.

3. Web Services

  • It is available in ASP.NET.
  • It is also platform independent.
  • It is supported for web only.
  • It is language independent (any .NET language).
  • It is supported for ASP.NET web sites only.
  • It supports SOAP and HTTP protocols.

4. WCF (Windows Communication Foundation)

  • It is introduced in .NET 3.5.
  • It is platform independent.
  • It is language independent (any .NET language).
  • It is supported for other language applications also (java applications, php applications etc.)
  • It is supported for any type of network (LAN, intranet and internet also).
  • It is supported in any type of applications (windows applications, web sites, WPF applications etc.)
0 Komentar untuk "The Application Development Architectures"

Back To Top