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Unformatted text preview: Primary Keys of the two entity types involved. Example result of applying the rule: PK1 E1Attrib2 PK1 PK2 PK2 E2 Attrib2 (0,n) (1,1) (1,1) (0,n) R1 R2 This composite Primary Key acts as a Foreign Key. Be sure to add new relationships, relationship labels, cardinality and optionality to the links from each original entity type to the linking entity type in the middle. E1 E2 R1 new E1 E2 E-New new...
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- Fall '10