The tag 'source' on the changeset has some pros and cons: Pros: - size in database - works only if the changeset comes from a single source Cons: - impossible to modify after changeset is closed - attribution lost in data extracts, planet (separate file for changesets) - doesn't allow more than one source per changeset - rebuild one element history is not trivial (one API call per element + one per changeset multiplied by amount of versions)
The tag 'source' on elements: Pros: - support multiple sources during edit session - attribution present in planet, extracts - can be modified at any time - retrieve one element history is easy (one API call) Cons: - size in database - works fine only for small edit sessions (or imports) Pieren _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
