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Re: Are people really using Identity constraints specified

• To: Priti Patil <priti@d...>
• Subject: Re: Are people really using Identity constraints specified
• From: Robert Koberg <rob@k...>
• Date: Fri, 13 Aug 2004 07:22:35 -0700
• Cc: xml-dev@l...
• In-reply-to: <1092402636.4023.5.camel@sarang>
• References: <1092386726.3274.19.camel@sarang> <411CAB87.8070504@d...> <f5by8kj44ox.fsf@e...> <1092402636.4023.5.camel@sarang>
• User-agent: Mozilla Thunderbird 0.7 (Macintosh/20040616)

Sun uses it in the schema for web app deployment descriptors:

http://java.sun.com/xml/ns/j2ee/#resources

I use it to ensure a a page referenced by a folder/@index_page is in the 
folder, for example:

<folder id="f123" index_page="p234">
  <page id="p123"/>
  <page id="p234"/>
</

best,
-Rob


Priti Patil wrote:

>Are you sure that these schemas are from real world i.e. these are
>actually used in the application. Those should not be the sample schemas
>which are generally designed for explaining the concept.
>
>Can you provide more details?
>
>Thanks and Regards,
>Priti Patil.
>
>
>On Fri, 2004-08-13 at 17:42, Henry S. Thompson wrote:
>  
>
>>I have a collection of slightly over 1000 distinct schema documents
>>culled from the web, which I'll be describing and releasing soon.  I
>>just checked, and conservatively the numbers are as follows:
>>
>>  schema documents using key, keyref and/or unique:  53
>>  uses of unique:                                   105
>>  uses of key:                                      179
>>  uses of keyref:                                   229
>>
>>ht
>>

• References:
  • Are people really using Identity constraints specified in XMLschema?
    • From: Priti Patil <priti@d...>
  • Re: Are people really using Identity constraints specifiedin XML schema?
    • From: Jonathan Robie <jonathan.robie@d...>
  • Re: Are people really using Identity constraintsspecified
    • From: ht@i... (Henry S. Thompson)
  • Re: Are people really using Identity constraints specified
    • From: Priti Patil <priti@d...>

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