By definition:

The noNamespaceSchemaLocation attribute references an XML Schema document that does not have a target namespace.

How will this attribute ever alter the result of parsing?

For example, take this XML:

<?xml version="1.0"?>
<name
  xmlns="http://www.example.com/name"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.example.com/name schema/schema.xsd"
  title="Mr.">
   <first>John</first>
   <middle>M</middle>
   <last>Doe</last>
</name>

referring to this schema:

<?xml version="1.0"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema"
xmlns:target="http://www.example.com/name"
targetNamespace="http://www.example.com/name" elementFormDefault="qualified">
  <element name="name">
    <complexType>
      <sequence>
        <element name="first" type="string"/>
        <element name="middle" type="string"/>
        <element name="last" type="string"/>
      </sequence>
      <attribute name="title" type="string"/>
    </complexType>
  </element>
</schema>

I removed these namespace declarations from the schema:

xmlns:target="http://www.example.com/name" 
targetNamespace="http://www.example.com/name"

without even using the noNamespaceSchemaLocation attribute in the referencing XML, no error was thrown. Why do we even need this attribute in the first place?

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