[Developers] [Data-modeling] is everyone married to themselves?

[Daniel E. Renfer]

Jeff Prucher wrote:
>  
>
>   
>> -----Original Message-----
>> From: developers-bounces at freebase.com 
>> [mailto:developers-bounces at freebase.com] On Behalf Of Daniel E. Renfer
>> Sent: Tuesday, December 18, 2007 7:13 PM
>> To: For discussions about MQL,Freebase API and apps built on Freebase
>> Subject: Re: [Developers] [Data-modeling] is everyone married 
>> to themselves?
>>
>> David Huynh wrote:
>>     
>>> Alexios Zavras wrote:
>>>   
>>>       
>>>> As someone who has once delved into the intricacies of 
>>>>         
>> time-ranges in 
>>     
>>>> databases, I must warn that this is a slippery path.
>>>>
>>>> I don't know about American constitution rules, but can a 
>>>>         
>> person be 
>>     
>>>> President for two non-consecutive terms ?
>>>> In that case, there is no single "start-of" and "end-of".
>>>>
>>>> I know it can happen with marriages:
>>>> As the most famous example I can think of, asnwer "Did Liz Taylor 
>>>> receive an award while being married to Richard Burton ?"
>>>> >From wikipedia, they were married in the intervals
>>>> (March 15, 1964 - June 26, 1974) *and* (October 10, 1975 - 
>>>>         
>> July 29, 
>>     
>>>> 1976).
>>>>
>>>> How do you model that ?
>>>>
>>>>   
>>>>     
>>>>         
>>> You could model the marriages and the job positions as independent 
>>> objects (reification in RDF).
>>>
>>> David
>>>       
>> Marriages are already done like that. (/people/marriage)
>>
>> It seems like the presidential schema is a little lacking. 
>> The US President type should hold references to a CVT that 
>> contains the presidential number, the from and to dates, and 
>> the vice president(s).
>>
>> If you model it like that, then it would be easy to fully 
>> model Grover Cleveland's[1] presidencies.
>>
>> [1]: http://www.freebase.com/view/grover_cleveland
>>
>>     
>
> Actually, this is possible using the current schemas. The to and from dates
> (plus some other information) are stored in a CVT, but one that connects to
> the type "politician" rather than "US president).  All US presidents should
> also be typed as politicians, although most aren't currently (this is a
> migration task we're working on, though).  Visit the page for Grover
> Cleveland again, to see how it works.
>
> Jeff
>
>
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>   
I figured there was a better generic type that could hold that
information, but I was being lazy and didn't bother to check. Shouldn't
US President and US Politician include the Politician? (at least until
the clean up is completed)

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