Sc Business Data Communications and Networking, Thirteenth Edition Student Choice Print on Demand
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Chapter 2, Problem 1Q
Program Plan Intro

Application architectures:

  • Application architectures explain the behavior of the applications that are used in business and concentrate on how the systems communicate with each other and with users.
  • It focuses on the data consumed and produced by the applications and not on the internal structure.

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Types of computer architectures:

  • Host based architectures:
    • Host-based was the first application architecture that was developed in 1960s
    • In this architecture, the server acts as a mainframe that performs all four application program functions.
  • Client-based architectures:
    • In this architecture, the clients are the personal computers on a LAN and the server is also a personal computer, present on the same network.
    • The application software. Present on the client computers are responsible for the presentation logic, the application logic, and the data access logic whereas the server only stores the data.
  • Client-server architectures:
    • These were developed to balance the processing between the server and the client by making both do some of the logic.
    • In this architecture, the client accepts the requests and performs the application logic that produces the database requests that get transmitted to the server.
    • The server accepts the database requests and performs the data access logic, then sends the result to the client where the client software accepts the results and displays them to the user.
  • Cloud computing architectures:
    • These architectures outsource a part or the entire infrastructure to other organizations that focus on managing that infrastructure.
    • There are three types of cloud-based architecture, they are:
      • Software as a Service (SaaS)
      • Platform as a Service (PaaS)
      • Infrastructure as a Service (IaaS)
  • Peer-to-peer architectures(P2P):
    • In this architecture, all the computers act as client and server which allow all the computers to perform all the four functions.
    • One of the advantages of the P2P architecture is that the data can be installed anywhere and anytime on the network.

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