Ternary Relationships

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Mapping Ternary Relationship Type: For each n-ary ( > 2 ) Relationships create a new relation to represent the relationship. The primary key of the new relation is the combination of the primary keys of the participating entities that hold the N (many) side. In most cases of an n-ary relationship all the participating entities hold a many side. Source: http://cnx.org/content/m28250/latest/

Figure 8.9 Source: http://cnx.org/content/m28250/latest/