Hi Dan,

If you have a simple type then you can use it to extend/restrict further 
simple types or to define complex types with simple content based on 
that simple type (in case you need attributes). If you define a complex 
type then you cannot use that anymore to derive simple types.

Best Regards,
George
---------------------------------------------------------------------
George Cristian Bina
<oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger
www.---.com


Dan Vint wrote:
> 
> Can someone explain these two constructs and any advantage or 
> disadvantage to using one over the other?
> 
> Too me it appears that at a schema level these are equivalent and 
> possibly at the code generation level as well.
> 
> I am currently using the following design:
> 
> <xsd:complexType name="AboveGroundIndicator_Type">
>   <xsd:simpleContent>
>         <xsd:extension base="xsd:boolean"/>
>    </xsd:simpleContent>
> </xsd:complexType>
> 
> <xsd:element name="AboveGroundIndicator" type="AboveGroundIndicator_Type"/>
> 
> This seems to be the equivalent:
> 
> <xsd:simpleType name="AboveGroundIndicator_Type">
>         <xsd:restriction base="xsd:boolean"/>
> </xsd:simpleType>
> 
> <xsd:element name="AboveGroundIndicator" type="AboveGroundIndicator_Type"/>
> 
> I see that one seems to allow extension where the other limits me to 
> restriction, but I believe even with the extension definition, I could 
> not extend my Type by adding additional attributes.
> 
> ..dan
> ---------------------------------------------------------------------------
> Danny Vint
> 
> Specializing in Panoramic Images of California and the West
> http://www.dvint.com
> 
> voice: 510-522-4703
> 
> When H.H. Bennett was asked why he preferred to be out
> shooting landscapes rather than spending time in his portrait studio:
> 
> "It is easier to pose nature and less trouble to please."
> 
> http://www.portalwisconsin.org/bennett_feature.cfm
> 
>    
> 

From mike@s... Thu Jan 12 09:01:12 2006
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