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information use. Information system classification: classified by data environment it can be divided into data files application databases

Basic functions of information system: data collection and input data transmission information storage information processing

support for management decisions. In short the information system is the input data

dimension. Information system definition: a system that combines management theory and methods applies information technology to solve management

The unit of the information amount is determined to be bit. 1.2 three dimensional structure of information system Hall: time dimension logic

information system. 1.1 definition of information Shannon in the mathematical theory of communication

life cycle of information system (each stage and its main work content) principles of information system construction

) Information system: concept of information system function of information system type of information system and development of information system. 2) Information system construction: complexity of

full process guidance for information system project manager examination

prediction) extrapolation (using historical data) qualitative assessment matrix analysis risk development trend assessment methods project hypothesis premise assessment

chart method (network or WBS method) on-site observation method historical data environment analysis method analogy method expert consultation 2Risk assessment

identification: inquiry method (mind scenery method interview method and Delphi method)

infeasible 17. Design 8. Implement 25.2 safety risk identification 25.3 risk identification and risk assessment methods

magnitude and priority of risks 5. Carry out input-output assessment on the design countermeasures 6. Transfer

estimate the possible consequences of the identified risks - risk assessment 4. Design the corresponding original Countermeasures -

system - objective 2. Analysis of existing system (business process)