introduction to information Systems

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qualities of an information systems

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Nature of Information Systems : 

Presented by Maxwell Amo-Hoyte Nature of Information Systems

Nature of Information Systems : 

Nature of Information Systems Organization: Group of individuals operating together in a systematic way to achieve a set of objectives Individuals interact to achieve objectives They interact with each other through rules and procedures to achieve objectives Convert resources into output Has objectives Takes input, process them into output Resources classified into raw materials, machinery, human resources, money, information Environment include physical environment, other organizations, abstract entities, individuals

Organizational Activities : 

Organizational Activities Primary (inbound logistics, operations, sales and marketing, outbound logistics, after sales support) Secondary activities (corporate planning and control, admin, financial management, HRM, R&D)

Organizational Structure : 

Organizational Structure Hierarchical Functional Management Structure Strategic Management Tactical Management Operational Management Types of Information Planning, operating and control Strategic, operational and tatical Qualitative and quantitative

Linkages between Activities : 

Linkages between Activities Orgs divided into departments Information disseminated formally and informally Information flows should reflect structure and means of achieving objectives Data and information

Qualities of Good Information : 

Qualities of Good Information Complete, relevant, timely, accurate, understandable, significant, channel, right recipient, cost benefit Noise in communication Redundant information Information cost (design and set up costs, running costs, storage costs)

Information Systems : 

Information Systems Defn: Formalized set of procedures designed to convert data into information for decision making Activities include: data capture, data processing, dissemination of information, information use, monitoring the system Information Systems Development Process entails: Establish business objectives Decide on information needs Establish sources of data Examine who needs data Format and timing of information received Process required t to convert data into information Build system Monitor and control system effectiveness

Information systems contd : 

Information systems contd Design could be bottom up or top down Manual or mechanized Information needs ( planning, monitoring, control, decision making, recording and processing transactions, communication)

Types of Information Systems : 

Types of Information Systems Transaction processing systems Office automation systems Management information systems Decision support systems Executive information systems Expert systems

Nature of DecisionMaking : 

Nature of DecisionMaking Structure (programmed decisions) Unstructured Semi-structured Analytical decisions Heuristic decisions

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