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How to use Pattern to restrict data

• To: xml-dev@l...
• Subject: How to use Pattern to restrict data
• From: Sean Zhang <Sean.Zhang@i...>
• Date: Mon, 1 Apr 2002 13:02:03 -0600

Hi,

I'm developing an XML schema and I'm using "pattern" to restrict the valid
values for certain attributes.

One specific case is the phone number, I want to exclude telephone number
starting with 800, 888, 866, etc.  How should I do this?

I was using <pattern value="[0-9]{10}"/> so that only 10 digits will be
acceptable. But I cannot find a way to exclude those numbers.  
I looked on the web and cannot find a complete reference as how to use
"pattern" and what are the possible symbols can be used in the "value"
And what does each symbol mean.  (for example, I found some schema with "?"
in value which means optional, also there are schemas specify "*", "|", etc
in value but there are no explanation as what does each mean)

Can someone point me to a good reference with full explanation?

Thanks,

Sean

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    • From: "Michael Fitzgerald" <mike@w...>

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