XSD Schema and XML, newbie

Hi,
I have XML with one element having value in percentage, like:
      <Contrib_Percent>15.5%</Contrib_Percent>
How do I define that in XSD? My knowledge in XSD is close to zero.
I also have a requirement that :
If Element A has value, Element B must have value, otherwise it can be empty value.
How do I define such relationship in XSD?
Is Visual Studio 2010 good tool for this or can you suggest?
Thanks!
VakilsDeveloperAsked:
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Geert BormansInformation ArchitectCommented:
And here is the XSD1.1 (note the vc:minVersion="1.1")
it requires B to have a value when A has a value

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:vc="http://www.w3.org/2007/XMLSchema-versioning" elementFormDefault="qualified" attributeFormDefault="unqualified" vc:minVersion="1.1">
	<xs:element name="root">
		<xs:complexType>
			<xs:sequence>
				<xs:element name="A"/>
				<xs:element name="B"/>
			</xs:sequence>
			<xs:assert test="not(normalize-space(A)) or normalize-space(B)"/>
		</xs:complexType>
	</xs:element>
</xs:schema>

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Geert BormansInformation ArchitectCommented:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
    <xs:simpleType name="percentage">
        <xs:restriction base="xs:string">
            <xs:pattern value="\d+(\.\d+)?%"/>
        </xs:restriction>
    </xs:simpleType>
    
    <xs:element name="Contrib_Percent" type="percentage"></xs:element>
</xs:schema>

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Geert BormansInformation ArchitectCommented:
I made a simple type for percentage
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Geert BormansInformation ArchitectCommented:
If Element A has value, Element B must have value, otherwise it can be empty value.
 How do I define such relationship in XSD?

You can't do that in XSD 1.0, you will need XSD 1.1 for that
Then you can use xs:assert
First check if your validator supports xsd 1.1

I like www.oxygenxml.com a lot for xsd development, highly recommended
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VakilsDeveloperAuthor Commented:
Thanks. Works!
How can I restrict value between 0 & 100?
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Geert BormansInformation ArchitectCommented:
   <xs:simpleType name="percentage">
        <xs:restriction base="xs:string">
            <xs:pattern value="\d{1,2}(\.\d+)?%"/>
            <xs:pattern value="100(.0*)?%"/>
        </xs:restriction>
    </xs:simpleType>

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VakilsDeveloperAuthor Commented:
Thanks! Works! You are real Guru! I downloaded oxygenxml.com.
One question, how do you write in xsd if a parent element is null:
<Contract_Information>
    <Contract_Year>2011</Contract_Year>
      <Product_Information/>  ---> this is null, how to define in xsd?
    	
      <Employee_Information>
          <Employee_Number>123456</Employee_Number>
          <SSN>123456789</SSN>

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Geert BormansInformation ArchitectCommented:
You can explicitely state it is empty,
but best approach is to leave the declaration empty

<xs:element name="Product_Information"></xs:element>

If you add a complexType, you can add xs:attribute declarations

if it is empty but can have child elements, make the child elements optional
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VakilsDeveloperAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 125 points for Geert Bormans's comment #a40588143
Assisted answer: 125 points for Geert Bormans's comment #a40587531
Assisted answer: 125 points for Geert Bormans's comment #a40587534
Assisted answer: 0 points for vakils's comment #a40587595
Assisted answer: 0 points for vakils's comment #a40590265
Assisted answer: 125 points for Geert Bormans's comment #a40590533

for the following reason:

Thanks for your excellent help. I learned a lot and was able to finish my project in time!
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VakilsDeveloperAuthor Commented:
Thanks for your excellent help. I learned a lot and was able to finish my project in time!
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Geert BormansInformation ArchitectCommented:
welcome
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