1. Paul Gustavson pgustavson@simventions.com
SISO XML Namespaces
Paul Gustavson

2. SISO XML Schema Style (XSS) Guide
technical SISO specification
Describes and specifies the rules and guidelines to be applied by SISO Product Development Groups (PDGs) when developing and maintaining an XML schema.
provides a way to identify, capture and maximize the re-use of SISO simulation standards expressed as XML schema components
Intended to support and enhance simulation interoperability across multiple M&S domains and disciplines.
Back on the clock. Expected first draft – May 4, 2011

3. What’s an XML namespace?
XML Namespaces provide a method to avoid element name conflicts.
Look for the prefix in an XML document
<h:table xmlns:h="
  <h:tr>
    <h:td>Apples</h:td>
    <h:td>Bananas</h:td>
  </h:tr>
</h:table>
<f:table xmlns:f="
  <f:name>African Coffee Table</f:name>
  <f:width>80</f:width>
  <f:length>120</f:length>
</f:table>
NOTE: The namespace URI is not used by the parser to look up information.

4. What’s a URI? Uniform Resource Identifier (URI)
identifies an Internet Resource.
Uniform Resource Locator (URL)
the most common URI
Identifies an internet domain location / address
Uniform Resource Name (URN)
Another type of URI, not as common
NOTE: As a general rule – it’s good practice to put the XSD in a serviceable address…

5. How SISO Namespaces / Schemas are identified? (1/2)
Schema using another schema
<xs:schema
xmlns=" xmlns:xs=" xmlns:xhtml=" xmlns:omt=" xmlns:modelID=" targetNamespace=" elementFormDefault="qualified">
<xs:import namespace=" schemaLocation="IEEE D2v0.83.xsd"/>
<xs:import namespace=" schemaLocation="ModelID_v2006_FINAL.xsd"/>

6. How SISO Namespaces / Schemas are identified? (2/2)
XML document identifying a SISO schema
<BOM
xmlns=" xmlns:xsi=" xmlns:modelID=" xmlns:omt=" xsi:schemaLocation=" BOM_v2010_9_17.xsd">

7. Where should SISO schema live?
Schemas are to be located at
Present status
Concerns?