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Ternary Relationships

I'm a little confused as to how to read Ternary Relationships from an ER diagram. I understand that a ternary relationship relates three entity types through an associative entity type that usually describes some sort of action. For a relationship involving the associative entity do all three entity types need to be involved? If anyone has any advice or a simple way to explain how to read ternary relationships that would be much appreciated.

September 29, 2004 in Class Issues |

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