Slides for Week 1 - Lec 2

Distributed Information Systems - The Client server model Week 1 – Lecture 2

Client server model ,[object Object],[object Object],[object Object]

Operating system Proc A Proc B Proc C Operating system Proc X Proc Y Proc Z Client process Client process Server process Server process Host 1 Host 2 Proc. A asks Proc. X to Perform a service. Proc. Z asks Proc. C to Perform a service Host 1 does not ask Host 2 to perform a Service

A brief history of IS 1970’s 1980’s 1990’s 2000’s Main frame or mini with dumb terminals LAN server & PC s 2 tier Client Server 3 & 4 tier Client server

Application layers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Network Dumb terminals Centralised Mainframe or Minicomputer Basic presentation Form definition Application Database File system

Centralised mainframe or Mini computer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Network PCs PC Lan PC Server File system Presentation Application Database

Network PCs PC Lan File Server Operating system Application Operating system File system

PC LAN ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Network PCs 2 Tier Client server Database Server PC or UNIX Database File system Presentation Application

Network PCs 2 Tier Client server Database Server Windows or UNIX Proc C Operating system File system Operating system Application Database

Two Tier Client Server ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Network PCs Servers Database File system Presentation 3 Tier Client/Server Application

Network PCs 3 Tier Client/Server Proc C Operating system File system Operating system Presentation Process Database Process Proc C Operating system Application Process

Three Tier Client Server ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Network PCs Servers Database File system Browser 4 Tier Client/Server Application Web

Network PCs 4 Tier Client/Server Proc C Operating system Browser Process Proc C Operating system Application Process Operating system File system Database Process Operating system WEB Server

Four Tier Client Server ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Advantages of distribution ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The advantages of being centralised ,[object Object],[object Object],[object Object],[object Object],[object Object]

Communications & Networks ,[object Object],[object Object],[object Object],[object Object]

Distributed Components ,[object Object],[object Object],[object Object]

Integrating disparate systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Security ,[object Object],[object Object],[object Object],[object Object],[object Object]

Server platform ,[object Object],[object Object],[object Object],[object Object]

Performance, scalability & reliability ,[object Object],[object Object],[object Object],[object Object]

International differences ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Case study ,[object Object],[object Object],[object Object]

Slides for Week 1 - Lec 2

Recomendados

Recomendados

Más contenido relacionado

La actualidad más candente

La actualidad más candente (20)

Similar a Slides for Week 1 - Lec 2

Similar a Slides for Week 1 - Lec 2 (20)

Más de webhostingguy

Más de webhostingguy (20)

Slides for Week 1 - Lec 2