[Biodevelopers] XML Standardization?

[Alex Milowski]

On Monday, January 13, 2003, at 10:23 AM, Patrick McConnell wrote:

>
> Can schema's easily represent parsed character data like DTD's can?  
> That
> is, can you have this:
>
> <annotation>This gene, <accession>ABC123</accession>, is a precursor to
> <accession>DEF456</accession>, which is a <keyword>G-Protein
> regulator</keyword>.</annotation>
>
> represented by a schema?
>
> My feeling is that DTD's are better at representing this sort of
> document-style XML.  Am I wrong here?

You can easily do this in XML Schema (see http://www.w3.org/XML/Schema):

<element name="annotation">
   <complexType mixed="true">
     <group maxOccurs="unbounded">
       <element name="accession"/>
       <element name="keyword"/>
     </group>
   </complexType>
</element>

<element name="accession" type="xs:string"/>

<element name="keyword" type="xs:string"/>

Alex Milowski                FAX: (707) 598-7649                        
  alex at milowski.com

"The excellence of grammar as a guide is proportional to the paucity of 
the
inflexions, i.e. to the degree of analysis effected by the language
considered."

Bertrand Russell in a footnote of Principles of Mathematics