ISSUE-14: Many-to-Many tables


Many-to-Many tables

Direct Mapping
Raised by:
Juan Sequeda
Opened on:
The direct graph is arguably more faithful to the conceptual model if it reflects e.g. a person with multiple addresses (some many-to-many Person2Address table) as repeated properties. It is difficult to detect which tables with exactly two foreign keys and no other attributes are many-to-many. As a counter example [1] , a Wedding table may have exactly two spouses but it's still not a many-to-many relation in most places.

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Related emails:
  1. Minutes of 2011-03-01 telecon (from on 2011-03-01)
  2. ISSUE-14 (many-to-many): Many-to-Many tables [Direct Mapping] (from on 2011-01-21)

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