Define data
Data are the raw material available for processing into information.
Define information
Information is a set of facts or data organized in such a way that it provides
additional value beyond that of the facts themselves. The creation of information
Activity
Data
Information
Knowledge
Decision-making
The creation of information (example)
Sale took place
Data are the number of sales for all the days in the year
Information is these numbers processed in totals per month and per year
Knowledge is recognizing which month and areas are best for business
Management makes decisions on where to focus and where to discontinue the
business
The characteristics of information
Accurate
Accessible
Up-to-date information
Detail information
Flexibility
Relevance of information
Cost-effectiveness
Reliability
Timely
Format of information
What is a system
A System is a set of two or more components that serve a common purpose and
interact to achieve a common goal.
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List the 3 components of a system
• Input
• Processing
• Output
Closed or open system a System that is isolated from its environment
is called a closed system.
Automatic washing machine an Open
system interacts with its environment. a
Purchasing system
System performance measurement
• Effectiveness
• Efficiency
• Performance standards
System variable
Is the quantity or item that can be controlled by the decision maker.
The price of products
System parameter
Is a value or quantity that cannot be internally controlled, meaning it cannot be changed
by a decision-maker in the company. Cost of raw material
Briefly define an information system
Is an organized way of collecting, processing, managing and reporting information for
informed decision-making to achieve goals
List 4 functions/role of information systems in organization
• Planning
• Recording transactions
• Decision-making
• Control and Performance measurement
Name 6 components that a computerized information system consists of
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• Hardware
• Software
• Telecommunication, networks and the internet
• People
• Procedures
• Database
A computerized information system process
• Activities
• Input of data
• Processing
• Ouput of information
• Making decisions
Accounting information system?
An AIS collects, records, stores and processes financial data to supply information for
decision makers.
What is an information strategy?
Refers to our decisions or plan om how to use the available information, how to collect
more relevant, usefull information and how to use the information technology to
manage the process.
The three elements of information strategy
• Information system strategy
• Information technology strategy
• Information management strategy
List 3 ways that an IS department can be organized to provide management with
the needed information
• Centralis
• Decentralise
• Outsource
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