Assignment 3 P4 P5 M2
Information Systems Functions and Features
Information system
It’s a system composed of people and computers that process or interprets information. The term is also sometimes used in more restricted senses to refer to only the software used to run a computerized database or to refer to only computer system.
An information system has four main functions:-
Input and Output;
Input with an information system has 2 different sections.
Detailed data that is stored and processed creates the output.
The user must specify to the system what sort of analysis they want the system to do.
While on the other hand, Output can be in 2 separate forms, graphical and textual. Graphical is often used to view information on a larger scale and presented as charts, graphs, diagrams and pictures. Textual is used to view the information on a smaller and more detailed scale, to do this it’s presented as charters, text or numbers.
Storage;
Data should be stored at the most detailed level possible. IT departments may choose to store data of various summaries and should regularly backup data to avoid losing important data due to errors, these backups should also be stored in a geographically separate location to avoid a disaster (fire or flood etc…) affecting both the original data storage and the backup data storage.
Processing;
This process is the function that transforms data into information. Simple processing would be simply adding up the number of items sold by the business by a variable, such as the store location, the product or the time or date.
Complex processing is the function of a computer performing calculations and making assumptions about any missing data to create the information from the data available.
There’s often a control or feedback loop so that the system output can affect future input.
Control and feedback loops;
Control/Feedback loop is what happens to output once it has been processed and produced. The system repeats the same sequence depending on the output
Information system
It’s a system composed of people and computers that process or interprets information. The term is also sometimes used in more restricted senses to refer to only the software used to run a computerized database or to refer to only computer system.
An information system has four main functions:-
Input and Output;
Input with an information system has 2 different sections.
Detailed data that is stored and processed creates the output.
The user must specify to the system what sort of analysis they want the system to do.
While on the other hand, Output can be in 2 separate forms, graphical and textual. Graphical is often used to view information on a larger scale and presented as charts, graphs, diagrams and pictures. Textual is used to view the information on a smaller and more detailed scale, to do this it’s presented as charters, text or numbers.
Storage;
Data should be stored at the most detailed level possible. IT departments may choose to store data of various summaries and should regularly backup data to avoid losing important data due to errors, these backups should also be stored in a geographically separate location to avoid a disaster (fire or flood etc…) affecting both the original data storage and the backup data storage.
Processing;
This process is the function that transforms data into information. Simple processing would be simply adding up the number of items sold by the business by a variable, such as the store location, the product or the time or date.
Complex processing is the function of a computer performing calculations and making assumptions about any missing data to create the information from the data available.
There’s often a control or feedback loop so that the system output can affect future input.
Control and feedback loops;
Control/Feedback loop is what happens to output once it has been processed and produced. The system repeats the same sequence depending on the output