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Primary key ______________________________ in a relational table must be a unique identifier for a row.
Q5: In a data flow diagram (DFD),an external
Q11: The fastest-growing segment of commerce-business is:<br>A) electronic
Q18: Information processing activities include:<br>A) only automated activities<br>B)
Q29: Information systems reliability and electronic commerce have
Q39: A neural network is a software program
Q42: A data flow diagram (DFD)could contain each
Q89: A man-made system consisting of people,authority,organization,policies and
Q93: In drawing a context diagram,we should include:<br>A)
Q140: The information system which emulates the problem-solving
Q147: _ are particularly important because they operate