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.NET Forum / .NET Framework / XML / March 2008xml schema design
I have an xml schema that I am working on. I wanted to know if it was a normal thing to do something like this: 1. Have a ZipCode simple type that has to be 5 characters long. 2. Have a StateCode simple type that has to be 2 characters long. 3. Have an Address complex type that has: - Street (string) - City (sgring) - State (StateCode) [noted in item 2 above] - ZipCode (ZipCode) [noted in item 1 above] 4. Have a Venue complex type that has the following: - Name (string) - Address (Address) [noted in item 3 above] - PhoneNumber (string) 5. Have an element that can contain only 1 instance of the Venue complex type. > I have an xml schema that I am working on. I wanted to know if it was a > normal thing to do something like this: [quoted text clipped - 12 lines] > 5. Have an element that can contain only 1 instance of the Venue complex > type. Sounds fine to me, you might additionally restrict zip code to five digits, enumerate the possible state codes.  SignatureMartin Honnen --- MVP XML http://JavaScript.FAQTs.com/ > Sounds fine to me, you might additionally restrict zip code to five > digits, enumerate the possible state codes. I forgot about the fact that I had ZipCode set to require 5 characters. I want to make this a 5 digit number but cant find a length property for the int or integer data type. How would I fix this? I have it set to ZipCode (string) - length=5. You also said to make an enum for the state codes. How exactly do I do this? >> Sounds fine to me, you might additionally restrict zip code to five >> digits, enumerate the possible state codes. [quoted text clipped - 4 lines] > (string) - length=5. You also said to make an enum for the state codes. How > exactly do I do this? Straight from <URL:http://www.w3.org/TR/xmlschema-0/> is this example: <xsd:simpleType name="USState"> <xsd:restriction base="xsd:string"> <xsd:enumeration value="AK"/> <xsd:enumeration value="AL"/> <xsd:enumeration value="AR"/> <!-- and so on ... --> </xsd:restriction> </xsd:simpleType> As for the zip code, one way is with a regular expression pattern: <xsd:simpleType name="zipType"> <xsd:restriction base="xsd:positiveInteger"> <xsd:pattern value="\d{5}"/> </xsd:restriction> </xsl:simpleType> SignatureMartin Honnen --- MVP XML http://JavaScript.FAQTs.com/ Why would it be a good idea to do an enum for the state codes instead of just letting somebody typing it in just a string field? >>> Sounds fine to me, you might additionally restrict zip code to five >>> digits, enumerate the possible state codes. [quoted text clipped - 22 lines] > </xsd:restriction> > </xsl:simpleType> > Why would it be a good idea to do an enum for the state codes instead of > just letting somebody typing it in just a string field? In terms of the W3C schema language I suggested an _enumeration_ below: >> <xsd:simpleType name="USState"> >> <xsd:restriction base="xsd:string"> [quoted text clipped - 4 lines] >> </xsd:restriction> >> </xsd:simpleType> Or are you now talking about a .NET enumeration defined with C# or VB.NET? SignatureMartin Honnen --- MVP XML http://JavaScript.FAQTs.com/ You have the right thing. Does it do the same thing a c# enum would do? either restrict the strings that can be used, or make useful names for meaningless numbers (like a c# enum does)? >> Why would it be a good idea to do an enum for the state codes instead of >> just letting somebody typing it in just a string field? [quoted text clipped - 11 lines] > > Or are you now talking about a .NET enumeration defined with C# or VB.NET? > You have the right thing. Does it do the same thing a c# enum would do? > either restrict the strings that can be used, or make useful names for > meaningless numbers (like a c# enum does)? The simple type I posted is a restriction of xsd:string allowing only the enumerated string values (e.g. "AK" or "AL") to be used. SignatureMartin Honnen --- MVP XML http://JavaScript.FAQTs.com/ Makes sense to me. I added all of the state codes to the schema. >> You have the right thing. Does it do the same thing a c# enum would do? >> either restrict the strings that can be used, or make useful names for >> meaningless numbers (like a c# enum does)? > > The simple type I posted is a restriction of xsd:string allowing only the > enumerated string values (e.g. "AK" or "AL") to be used.
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