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Re: Are people really using Identity constraints specifiedin X

• To: xml-dev@l...
• Subject: Re: Are people really using Identity constraints specifiedin XML schema?
• From: Carlos Torres <carlosttm@t...>
• Date: Fri, 13 Aug 2004 10:33:55 +0100
• In-reply-to: <1092386726.3274.19.camel@sarang>
• References: <1092386726.3274.19.camel@sarang>
• User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)

Hi,
Im the newbie that asked about constraints lately. In my case I'm 
creating a file to exchange statistic data about tourism in some hotels 
each day and from which countries every month, so I want to make sure 
that they do not repeat a data entry for the same country and the same 
day. As I come from relational databases a primary key is what comes 
naturally to my mind.

Anyway is just to make a check, I won't use it as the final storage 
which will be a relational database. It's just to make easy the exchange 
of data and the validation of the information.

Priti Patil wrote:

>Hi all,
>
>I am a research student. I am working on the project which will convert
>identity constraints specified in XML schema to relational keys while
>mapping XML to relations. 
>
>As a curiosity to see, how important are the identity constraints from
>the perspective of XML application developer, I thought that let me see
>how many people are using XML schemas which has key, keyref. For that, I
>surveyed the schemas which are provided in the repository of  XML.org.
>But none of the schema contains the use of integrity constraints. 
>
>Thus question which come into my mind is that Are people really using
>Identity constraints specified in XML schema?
>
>Can any one tell me answer to this?
>
>Thanks and Regards,
>Priti Patil.
>
>
>
>
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• Follow-Ups:
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    • From: "Michael Kay" <michael.h.kay@n...>

• References:
  • Are people really using Identity constraints specified in XMLschema?
    • From: Priti Patil <priti@d...>

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