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   Re: [xml-dev] Are people really using Identity constraints specifiedin X

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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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