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Define semantics for referential integrity #160

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cmungall opened this issue Jun 4, 2023 · 0 comments

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cmungall commented Jun 4, 2023

A non-inlined class range may be intended as:

a reference to an object in the same document, database, or graph
a reference to an object in the external document, database, or graph

For external references, the mechanism for deferencing will vary depending on substrate:

for rdf, the reference MUST be a URI. If the URI is a URL then the URL may be deferenceable by conneg
for json/yaml docs, there would need to be a bridge from URIs to e.g. JSONPointer
for sql there would need to be a way to bind URIs to other databases

In all cases some kind of configuration would need to be supplied.

Additionally, the interpretation may be one of:

the reference MUST be present
the reference SHOULD be present

Furthermore, the semantics of deleting could be one of:

no action
cascading delete

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