[OSM-dev] Datamodel relation/member constraints

Stefan de Konink skinkie at xs4all.nl
Fri May 30 21:21:07 BST 2008


Second question:

Are there currently any constraints on relations members based on:

1) Sequence

and/or

2) 'Reuse'


So would it be allowed to do:

type=node ref=1 role=from
type=node ref=2 role=at
type=node ref=1 role=at
type=node ref=3 role=to

Or is the second 1 not allowed?

Next to this; can a user explicitly trust the sequence 1,2,1,3; or is 
this currently not guaranteed?


Stefan




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