21. To run the old system and the new system at the same time for a specified period, the system implementation approach used is
22. The mistake, committed by interchanging two digits in a numeric held, during data entry, is called
23. Decision tree uses
24. Problem analysis is done during
25. Top-down programming is
26. A decision table facilitates conditions to be related to
27. On the feasibility committee, department representatives serve as:
28. A _____ is an outline of a process that keeps develop successful information systems
29. A branch office, location or other data processing centres, where a newly developed system is used under normal operating conditions for several months, to test it, is called
30. An appraisal, of a system's performance after it has been installed, is called system
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