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(4 points) In the following figures relations R are indicated by gray shading. In figure (a), the relation is on R in (b) the relation

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(4 points) In the following figures relations R are indicated by gray shading. In figure (a), the relation is on R in (b) the relation is on Z. State what familiar relation is being represented. (a) (b)

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Database Systems For Advanced Applications 18th International Conference Dasfaa 2013 Wuhan China April 22 25 2013 Proceedings Part 2 Lncs 7826

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