ISSUE-11: Primary Key is a Foreign Key


Primary Key is a Foreign Key

Direct Mapping
Raised by:
Juan Sequeda
Opened on:
What happens if an attribute is both a primary key and a foreign key? Is a literal triple and a reference triple created? Should we consider this case in the direct mapping? Common data modeling suggest this case as hierarchy.

This issue references ISSUE-13
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Related emails:
  1. ISSUE-11 (pk-is-fk): Primary Key is a Candidate Key [Direct Mapping] (from on 2011-01-21)

Related notes:

On the Feb 15 2011 telcon we resolved as follows
<ivan> RESOLVED: unary primary keys which are also foreign keys are treated exactly as other unary foreign keys

See also proposal from Eric:

Ashok Malhotra, 15 Feb 2011, 18:21:53

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