Friends,The following post describes Information System Architecture:What is meant by Information system architecture?
Information systems are concerned with practices of capturing, storing, retrieval, processing and facilitating communication of information.The study of information systems, explains how technology can be put into best use to serve the information flow within an organization.
Now let us consider how an information system is designed:
The conceptual framework of an information system is focussed on System Engineering principles and laid on/backed by Data Structures and Algorithms that facilitates logical flow of information.
Data Structures: a data structure is a way of storing data in a computer so that it can be used efficiently.(What has to be stored)
Algorithm: an algorithm is a process or set of rules used for problem-solving, esp. with a computer.(How to link stored data)
Moving on same page let us understand the visual design of an information system:
In an organization Information systems are computer-based infrastructures that collect, process, store, transmit, display and disseminate information as per user request. And the organization have different functional units working together like Marketing, Finance, Production, Human Resource Etc. having some common goals set by organization.Each functional unit has a different set of query, information processing activities, report generation, and different attributes.
But now How to integrate huge and ever changing data?
We create a Database that essentially stores information in an organized manner. Boiling down at implementation of this schema the system is categorized as follows:
Single Tier Integrated System
In a single Tier approach we have one server on a common platform that stores all the data and different applications but keep the applications different. Applications consists of set of programs that help to run and generate reports as per the query. The system must keep the data and application separate no matter they are on same physical hardware.
Two Tier Approach
Basically in Two Tier we connect the Client machines to one common server that restores all the data in a database and the applications are stored on client machines and the whole schema is integrated with use of LAN(Local Area Network).Applications are categorized as business logic applications and presentation logic applications that are embedded on client's machines and they generate reports are access their applications using Server Database.Also there can be extension to this approach if we lay a WAN i.e Wide Area Network
Three Tier Architecture
In a Three Tier architecture as the name suggests we add another layer i.e the business logic is kept centrally, there is a server which stores all the database and these are in turn connected with client systems.These are linked using integrated WAN and the client machine can see user interface(Graphic User Interface)but the processing of application does not require intervention from server.
Now let us consider how an information system is designed:
The conceptual framework of an information system is focussed on System Engineering principles and laid on/backed by Data Structures and Algorithms that facilitates logical flow of information.
Data Structures: a data structure is a way of storing data in a computer so that it can be used efficiently.(What has to be stored)
Algorithm: an algorithm is a process or set of rules used for problem-solving, esp. with a computer.(How to link stored data)
Moving on same page let us understand the visual design of an information system:
In an organization Information systems are computer-based infrastructures that collect, process, store, transmit, display and disseminate information as per user request. And the organization have different functional units working together like Marketing, Finance, Production, Human Resource Etc. having some common goals set by organization.Each functional unit has a different set of query, information processing activities, report generation, and different attributes.
But now How to integrate huge and ever changing data?
We create a Database that essentially stores information in an organized manner. Boiling down at implementation of this schema the system is categorized as follows:
Single Tier Integrated System
In a single Tier approach we have one server on a common platform that stores all the data and different applications but keep the applications different. Applications consists of set of programs that help to run and generate reports as per the query. The system must keep the data and application separate no matter they are on same physical hardware.
Two Tier Approach
Basically in Two Tier we connect the Client machines to one common server that restores all the data in a database and the applications are stored on client machines and the whole schema is integrated with use of LAN(Local Area Network).Applications are categorized as business logic applications and presentation logic applications that are embedded on client's machines and they generate reports are access their applications using Server Database.Also there can be extension to this approach if we lay a WAN i.e Wide Area Network
Three Tier Architecture
In a Three Tier architecture as the name suggests we add another layer i.e the business logic is kept centrally, there is a server which stores all the database and these are in turn connected with client systems.These are linked using integrated WAN and the client machine can see user interface(Graphic User Interface)but the processing of application does not require intervention from server.
Multi Tier Architecture
Multi Tier Architecture talks internet encryption in existing Three Tier Architecture and each machine now is web enabled connected to common server and all hard processing is centrally executed.Business applications are web enabled and no software installation on each machine is required.We have 3 server entities i.e Data, Business Application and Web Server and we can also use consolidation approach to integrate entire flow of information.
