AIS Chapter 13
system professionals
have expertise in the specific areas that the feasibility study covers
user handbook
reference manual of commands for getting started
project planning
allocate resources to individual applications within the framework of the strategic plan
strategic systems planning
allocation of systems resources at the macro level and often deals with a time frame of three to five years
walk through
analysis of system design to ensure the design is free from conceptual errors
economic feasibility
availability of funds to complete the project
backbone systems
basic system structure on which to build
project schedule
budget of the time and costs for all the phases of the SDLC and represents managements commitment to the prj
turnkey systems
completely finished and tested systems that are ready for implementation
office automation systems
computer systems that improve the productivity of office workers
systems maintenance
constitutes the organization's program change procedures: It begins once the seven phases are completed and the system is fully implemented
parallel operation cutover
conversion process in which the old system and the new system are run simultaneously for a period of time
systems selection report
deliverable portion of the systems selection process that will go to the next phase
general accounting systems
designed to serve a wide variety of user needs
system survey
determination of what elements of the current system should be preserved as part of the new system
technical feasibility
determination of whether the system can be developed under existing technology or if new technology is required
structure diagram
divides processes into input, process, and output functions
run manual
documentation describing how to run the system
legal feasibility
ensures that the proposed system is not in conflict with the company's ability to discharge its legal responsibilities
stakeholders
entities that have a direct or indirect interest in the firm
systems professional
expertise in the specific areas that the feasibility study covers
systems analysis report
formal report that marks the conclusion of the systems analysis phase
new systems development
involves conceptual steps that can apply to any problem-solving process
systems planning
links individual system projects or applications to the strategic objectives of the firm
systems evaluation and selection
optimization process that seeks to identify the best system
phased cutover
process of converting an old system to a new one in modules
cold turkey cutover
process of converting entirely from an existing system to a new system on a particular day r
Cutover
process of converting from the old system to the new one
detailed design
produce a detailed description of the proposed system
detailed design phase
produce a detailed description of the proposed system that both satisfies the system requirements identified during systems analysis and is in accordance with the conceptual design
conceptual design
produce several alternative conceptual systems that satisfy the system requirements identified during systems analysis
project proposal
provides management with basis for deciding whether to proceed with the project
detailed design report
set of blueprints that specify input screen formats, output report layouts, database structures, and process logic
Data flow diagrams
set of symbols in a diagram to represent the processes, data sources, data flows, and process sequences of a current or proposed system
iterative approach
small "chunks" or modules cycle through all of the SDLC phases rather rapidly, with a short time frame from beginning to end
systems development life cycle (SDLC)
software development process
back bone system
system structure on which to build
vendor supported systems
systems that the vendor develops and maintains for the client organization
pay back method
the break-even point is reached when total costs equal total benefits
operational feasibility
the degree of compatibility between the firm's existing procedures and personnel skills and the operational requirements of the new system
schedule feasibility
the firm's ability to implement the project within an acceptable time.
Net Present value method
the present value of the costs is deducted from the present value of the benefits over the life of the system
end users
those for whom the system is built
database conversion
transfer of data from its current form to the format or medium required by the new system