xml - Difference between Default Namespace and targetnamespace? null namespace? -


i've read through several posts found on google , wiki article namespace , xml scheme, , dont know.. cant quite understand difference between default namespace , targetnamespace..

so default namespace namespace used default (if no other namespace defined elements) while targetnamespace seems of same use?

also i've read, attributes default signed null namespace? nullnamespace?

in example:

<test xmlns="www.example.org" attribute1="1" attribute2="tbla" attribute3="helloworld">   <child1></child1> </test>

so child1 in www.example.org namespace while attribute1 /attribute2 , attribute 3 in null namespace?

i think benefit question: why need targetnamespace?

my understanding targetnamespace developed match xml schema (.xsd) xml document using schema. above question , discussion answers in more depth.


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