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Question
For a binary one-to-one relationship between two entities, A and B, the primary key of A becomes a foreign key in B and the primary key in B becomes a foreign key in A.Answer
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If an input from a source appears on a level-0 diagram, it must:
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Which of the following is a true statement regarding data flows?
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A square on a data-flow diagram represents a sink or a:
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The shape of a data-flow (DFD) diagramming process is a(n):
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