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21. 

Advantages of data base system is (are)
A. storage space duplication is eliminated
B. all applications share centralized files
C. data are stored once in the data base and are easily accessible when needed
D. All of the above
E. None of the above
22. 

A Decision table
A. represents the information flow
B. documents rules, that select one or more actions, based on one or more conditions, from a set of possible conditions.
C. gets an accurate picture of the system
D. shows the decision paths
23. 

The structure chart is:
A. a document of what has to be accomplished
B. a hierarchical partitioning of the program
C. a statement of information-processing requirements
D. All of the above
E. None of the above
24. 

Top Management is more interested in
A. day-to-day operations
B. strategic decisions
C. tactical decision
D. both b and c
E. None of the above
25. 

Which of the following is a function of the process step of data processing?
A. protect
B. index
C. retrieval
D. update
E. None of the above