BIS week 2

Question Answer
Characteristics of Valuable Information Accessible. Accurate. Relevant. Reliable. Secure. Simply. Timely
Accessible Right format at the right time
Accurate There is no errors
Relevant Correct information for the decision maker
Secure Cannot be accessed by unauthorised users
Simple To the point
Timely Delivered when it is needed
What is an information system? Collects (input0, manipulates (processing0, store and disseminate(output) data and information.
Efficiency of an IS system is measured on : Cost, Time and use of resources.
Effectiveness of an IS system is measured on: Supporting business strategies, enabling business processes, enhancing organisational structure and culture. and increasing business value.
Qualities of a system analysis problem solver and communicator
Stage 1 of the System development cycle identifying problems, opportunities and objectives. Critical to the success of the project. avoids time wasting. looking at whats happening in the business. discover what the business wants to do,
stage 2 of the system development cycle determining human information requirements. interviews, sampling, what users need to perform.thier jobs, how is the system useul.
state 3 of the system development cycle Analysing System needs;. special tools and techniques help the analyst to determine what the requirements are. prepares system proposal summaries
stage 4 of the system development cycle designing the recommended system. logical design of system based on information gathered. designing databases used by decision maker. design controls to protect the system. and specific programmes.
stage 5 of the system development cycle developing and documenting the system. programmes and analyst works together to develop and original software. programmers design, code and remove any errors from the program.
stage 6 testing and maintaining the system.. less costly to spot a problem early. some testing by programmers, some by analysts works with programmers. maintenance begins
stage 7 implementing and evaluating the system. training users to handle the sytem.
Organisational Change Any change in technology, people, task or structure will necessitate a change in the other three.
Technology Acceptance Model TAM theorises how users come to accept and use a technology.
Competitive Advantage Significant and long term benefit to a company over its competition. results in better quality and customer service.
Strategic Alignment Model implication of IT. role of senior management. IT organisation.
who is in charge of IS Chief information officer. highest hierarchical IT manager. controls information flow. creates competitive advantage. leadership. management skills. strategic value. technology brought under control.
Porters Five Forces Rivalry among competitors. Threat of new entrants. threat of sub products. bargaining power of buyers. bargaining power of suppliers.
Business Value measuring and communicating value continues to be a challenge. traditional metrics are focused on reducing costs rather than value. link between financial and function may be difficult to show.
IT business value needed

Leave a Reply

Your email address will not be published. Required fields are marked *