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namespace and targetnamespace

jeff mutonho
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Joined: Apr 30, 2003
Posts: 271
Can someone explain the difference between these 2? Or perhaps refer me to some document/book that explains this clearly.
Thanks


Jeff Mutonho

SCJP
Peer Reynders
Bartender

Joined: Aug 19, 2005
Posts: 2922
    
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targetNamespace is used in XML Schemas and WSDL to identify and select the namespace into which new elements that your are defining are created in. Once you have defined a new element you still need a namespace declaration to be able to reference the new element or type.

Example:

The targetNamespace is "http://www.Monson-Haefel.com/jwsbook".
Types created:
  • {http://www.Monson-Haefel.com/jwsbook}USAddress
  • {http://www.Monson-Haefel.com/jwsbook}Book
  • {http://www.Monson-Haefel.com/jwsbook}PurchaseOrder


  • Elements created:
  • {http://www.Monson-Haefel.com/jwsbook}purchaseOrder
  • {http://www.Monson-Haefel.com/jwsbook}address


  • Note however that there is also a namespace declaration xmlns:mh="http://www.Monson-Haefel.com/jwsbook". So when you reference anything that exists in the "http://www.Monson-Haefel.com/jwsbook" namespace you simply use the prefix "mh" within the scope of that element (in this case schema). This is used in the PurchaseOrder type definition where {http://www.Monson-Haefel.com/jwsbook}USAddress is referenced as mh:USAddress and {http://www.Monson-Haefel.com/jwsbook}Book is referenced as mh:Book.

    Ronald Bourret's XML Namespaces FAQ
    James Clark: XML Namespaces
    jeff mutonho
    Ranch Hand

    Joined: Apr 30, 2003
    Posts: 271
    Thanks.That really helped
     
    I agree. Here's the link: http://aspose.com/file-tools
     
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