Perfective maintenance _____.
A. adds enhancements to an operational system and makes the system easier to use
B. diagnoses and corrects errors in an operational system
C. involves changing an operational system to make it more efficient, reliable, or maintainable
D. competes for resources in an operational system
Answer: C
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What will be an ideal response?
Relationships in a database can be graphically represented by the ________ between the tables
Fill in the blank(s) with correct word
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A. Foreign B. Overseas C. International D. Languages