Hi,
I think a valid_from and valid_to-field would be a great idea. Especially for
queries on the db.
But I think it is a fundamental design decision and I'm not sure if it's
possible to integrate now...
LB
Marco Fleckinger <[email protected]> schrieb:
>Hi,
>
>On 30.09.2012 12:07, Daniel Kinzler wrote:
>> On 30.09.2012 11:59, Marco Fleckinger wrote:
>>> regarding an actual topic in Germany about publication of the
>timetable-data of
>>> Deutsche Bahn (German national railway company) and their
>willingness of a
>>> discussion with other Open-Data-Supporters it may be a good idea of
>providing an
>>> expiration dates for Wikidata-records.
>>>
>>> In their open letter to Mr. Kreil [1] they announced that it may
>cause problems
>>> providing the timetable-data in an open way if e.g. anybody uses old
>data.
>>
>> Or approach to this is to mark individual statements as "historic",
>while the
>> most current data is marked as "preferred". This is already necessary
>for basic
>> things like population numbers. However, I don't think we need to
>expire data
>> automatically - it should just be superseded by newer information.
>>
>Possible solution, but what will you do if a railway company does not
>provide actual data anymore? Then the old data is still the most
>actual.
>
>Another using case would be a new law. There you could determine the
>actual one by checking such dates with the server's date. The new law
>will be in the repository before, but will be visible as it comes in
>force.
>
>So also a launch field would be great.
>
>So with launch and expiration dates it would be possible that there
>will
>be no data if there is no data in the database, very important for some
>
>applications as Deutsche Bahn says.
>
>Marco
>
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