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Re: When to namespace a vocabulary?

• To: Fraser Crichton <fraser.crichton@s...>
• Subject: Re: When to namespace a vocabulary?
• From: david.lyon@c...
• Date: Wed, 27 Apr 2005 11:15:22 +1000
• Cc: xml-dev@l...
• In-reply-to: <426ED0EC.1060604@s...>
• References: <426ED0EC.1060604@s...>
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Fraser,

Many things are unclear here, such as what is in the xml documents and what the
vocabulary is for. Whether it is an Oasis vocab or one you are building
yourself.

Also, it's unclear where a traditional rdms falls short of being able to
organise companies into categories and classifications. As they tend do that
rather well.

So if information is available on these things then it would probably help
people to offer a bit more information.

Regards

David

Quoting Fraser Crichton <fraser.crichton@s...>:

> Hi,
>
> I'm currently developing a set of schemas for a Government Department
> which deals with education and I've got some questions about managing
> dependencies and namespaces. This is a bit tricky to describe so please
> bear with me.
>
> Currently I have the following namespaces corresponding to individual
> schema files (these are just example dummy URIs to get the concept over)
>
> LEVEL 1 - "core business object Schemas"
>
> organisationName:classification
>
> organisationName:standard
>
> organisationName:qualification
>
> LEVEL 2 - "Instance Schemas"
>
> Specific document and message formats which implement various elements
> from each namespace and other OASIS namespaces.
>
> I'm about to remodel this to avoid dependencies between my level 1 core
> schemas and I also have the feeling that this level or granularity maybe
> unnecessary (?).
>
> I think I have three options -
>
> 1) Create one organisation wide namespace containing models of
> classifications, standards and qualifications in the one file (I like
> this because in the future it might be clearer where we can separate out
> namespace specific objects once it's clearer where that may be necessary).
>
> 2) Chain the Level 1 schemas. My main dependency problem comes when I
> try to model a classification tree that contains standards so I guess I
> could import standards into classifications.
>
> 3) Create another namespace between level 1 and 2. I don't really think
> that's a solution just an option.
>
> I guess my main question is -
>
> What things do you think about when you decide a schema requires split
> up into different namespaces?
>
> Can you point me at any articles on best practice in this area?
>
> Does anybody have any thoughts or experience?
>
> Does anybody know what I'm on about??
>
> Cheers,
>
> Fraser
>
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