Question on namespace for xml schema

In xml schema file .xsd, there are a few name with the domian name used to verify if xml is valid: If I have a schema file myschema.xsd as:

<?xml version="1.0" encoding="utf-8"?>
<xs:schema id="mySchema" targetNamespace="http://www.abc.ca/myObject.xsd"
           elementFormDefault="qualified" xmlns="http://www.abc.ca/myObject.xsd"
           xmlns:mstns="http://www.abc.ca/myObject.xsd"
           xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
...
</xs:schema>
Does it mean  that this file should be put on the web site www.abc.ca and can be accessed with http:// ...