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Figure 3 -10 Relationship types and instances © 2007 by Prentice Hall 19

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Figure 3 -11 a A binary relationship with an attribute © 2007 by Prentice

Figure 3 -11 b An associative entity (CERTIFICATE) © 2007 by Prentice Hall 37

Figure 3 -13 c An associative entity – bill of materials structure © 2007

Figure 3 -18 Ternary relationship as an associative entity © 2007 by Prentice Hall

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