ISSUE-11: Primary Key is a Foreign Key
pk-is-fk
Primary Key is a Foreign Key
- State:
- CLOSED
- Product:
- Direct Mapping
- Raised by:
- Juan Sequeda
- Opened on:
- 2011-01-21
- Description:
- 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
- Related Actions Items:
- No related actions
- Related emails:
- ISSUE-11 (pk-is-fk): Primary Key is a Candidate Key [Direct Mapping] (from sysbot+tracker@w3.org 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:
http://this-db-really.does-not-exist.org/
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