Mastery Test (Homework)
A system is: (c) A collection of parts that work together.An information system: (a) turns data into information.A person who contributes data to an information system but is not involved in its operation and does not use any information or data it produces can be described as : (c) in the system environment.The environment of an information system: ()Which of the following lists contains all the categories that would be needed to adequately describe the role an information system: (c)The participants in an information system: (a) are responsible for its operations.A system is a collection of parts that work together to achieve a particular purpose or result.All systems have inputs, processes and outputs.An information system accepts data as an input and produces information or processed data as an output.Every system has a purpose that describes why it is needed and a(n) environment where it is used.Information technology is the equipment (hardware) used by an information system and the instructions (software) that controls the equipment.A participant is anyone who is involved in the operation or running of an information system.An end user is the person who receives the information produced by an information system.The environment is where an information system is used.A group information system is used by many different participants.23 - Explain how new developments in technology have influenced information system.Netbook - provides mobility and compact ability.iPhone - provides on-the-go music download ect.Social and Ethical Issues :
Privacy and Security - Privacy is information you have on a system, and security is how you keep that information safe and private.Access and Control - those who have access to technology have more control over their life including online banking and educational reasons.Employment and the changing nature of work - Modern day work is working from home (aka telecommuting), this causes isolation and distraction.Data Flow Diagrams:
< equiv="Content-Type" content="text/html; charset=utf-8">< name="ProgId" content="Word.Document">< name="Generator" content="Microsoft Word 11">< name="Originator" content="Microsoft Word 11">< rel="File-List" href="file:///C:%5CDOCUME%7E1%5C06rshaw%5CLOCALS%7E1%5CTemp%5Cmsohtml1%5C01%5Cclip_filelist.xml">
Data flow diagrams represent an information system as a number of processes that together form the single system. This single system can be represented more simply using a context diagram (see below). Data flow diagrams therefore show a further level of detail not seen in the context diagram. Data flow diagrams identify the source of data, its flow between processes and its destination along with data generated by the system. 
Entity: thing or person that is the source of a data.
Data Flow and Context Diagrams - On the student website.
