The Dangers of Cannibalizing Data Models

[Pierre Le Sidaner]

On 05/23/2012 09:09 PM, Douglas Tody wrote:
> On Wed, 23 May 2012, Rob Seaman wrote:
>
>> A couple of comments in support of Arnold's self-consistent world view:
>>
>>> I have always objected to the practice of cherry-picking components 
>>> from STC, since it destroys the integrity of the model: there is no 
>>> guarantee that the metadata are either self-consistent or complete 
>>> anymore.  And Utypes are a form of doing this.
>
>>> Pierre le Sidaner complained that in ObsTap he could not 
>>> characterize time appropriately.  Of course not: it contains a Time 
>>> Scale, but adding a Time Reference Position was deemed not to be 
>>> necessary.
>
> Heaven forbid if should allow applications (ObsTAP for example) to
> define what is required for their application, rather than someone who
> defines a complex, general data model that could be used for anything.
>
> In the case of ObsTAP we have an application of the general data models
> which is used for data discovery, global data discovery in particular.
> Precision timing is not required for this purpose.  ObsTAP merely
> determines that a dataset (out of the potentially billions out there)
> contains data within some specified time range.  If a client analysis
> application requires precision timing it will find more precise time
> calibration data by using other interfaces to examine in more detail the
> datasets discovered by ObsTAP.
>
>     - Doug
>
Hi

I complain that in context of Europlanet users ask for more time scale 
that what Obs Core was able to propose
I came to STC "import" stc:timeScaleType then I asked if that fulfil 
their request. The answer was yes.
I didn't fell to be a cannibal as I have import STC in my schema and my 
xsd use the STC complex type.

I understand that the information is not sufficient and I would have not 
trust the "specialist" on that

Regard
Pierre

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                            Pierre Le Sidaner
                         Observatoire de Paris

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