Reference implementations

[Laurent MICHEL]

Hello,

Everyone agrees with the 1st requirement which is to provide a valid 
VO-DML serialization of the model (not an instance). That means that all 
elements of that model are compliant with the VO-DML spec.
That does not mean that the model elements make sense in our domain.

This is the purpose of the requirement #2: mapping somehow real data on 
the model. `
This cannot be achieved automatically while we do not have a stable 
VOTable mapping mechanism.
So either we wait for the mapping to be advanced enough or we work 
around it.
At the end why note doing this by hand?
The validation could consist in a document proving that the model match 
real data.

This validation method is rather common in Quality assurance as far as I 
know.

Laurent

Le 10/05/2016 17:01, Matthew Graham a écrit :
> Hi Mireille,
>
> So you're advocating for some software that can consume DM instance serializations as the sufficient definition of a reference implementation of the DM.
>
> -- Matthew
>
> On May 10, 2016, at 4:52 PM, Mireille Louys wrote:
>
>> Hi ,
>> A data model is usually designed to meet the requirements expressed in formalized use-cases .
>> To be valid , it should meet the requirements.
>>
>> VO-DML will help to express a data model in a machine readable document.
>> This does not warrant the classes and attributes defined in the document mean something in the use-case context.
>>
>> There should be a service or an application that consumes the serialisations instances of the model.
>> The serialisation documents should be validated with respect to the constraints , data types , vocabulary terms expressed in the DM description.
>>
>> Reference implementation should work on real data.
>>
>>
>> Did I miss anything on the intent  ? More to discuss probably.
>>
>> Cheers, Mireille
>>
>> Le 10/05/2016 15:04, Matthew Graham a écrit :
>>> Hi,
>>>
>>> We're trying to define specifically what would satisfy the reference implementation requirement for an IVOA Spec in the context of a data model. The proposal is that:
>>>
>>> (1) If the DM has been described using VO-DML it can be validated as valid VO-DML
>>>
>>> (2) An XML serialization of the DM can be validated
>>>
>>> so therefore is the combination of the two sufficient to demonstrate the validity and potential interoperability of the data model (which is the purpose of the reference implementations).
>>>
>>> 	Cheers,
>>>
>>> 	Matthew
>>

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