---+ DatasourceCapabilitiesProposal
Belonging to the FourthProposal including all additional suggestions at the bottom.

---+++++ Request
<verbatim>
<request>
   <header>
      <source url="http://www.altova.com" sendtime="2001-12-17T09:30:47-05:00" software="String"/>
      <source url="http://www.altova.com" sendtime="2001-12-17T09:30:47-05:00" software="String"/>
   </header>
   <capabilities/>
</request>
</verbatim>


---+++++ Response
<verbatim>
<response>
   <header>
      <source url="http://www.tdwg.org" sendtime="2001-12-17T09:30:47-05:00" software="String"/>
      <destination client="http://www.tdwg2.org"/>
   </header>
   <capabilities>
      <metadataSchema ns="http://www.tdwg.org/schemas/1"/>
      <conceptualSchema ns="http://www.tdwg.org/schemas/2"> *
         <software name="String" version="String">
            <component name="String" version="String"/> *
         </software>
         <settings>
            <minQueryTermLength>0</minQueryTermLength>
            <maxSearchResponseRecords>0</maxSearchResponseRecords>
            <maxInventoryResponseRecords>0</maxInventoryResponseRecords>
         </settings>
         <recordDefinitions>
            <recordDefinition path="/a/@a"/> *
         </recordDefinitions>
         <mappedConcepts>
            <concept path="/a/@a" searchable="1"/> *
         </mappedConcepts>
         <filterOperators>
            <logicalOperators/>
            <comparativeOperators>
               <basicComparativeOperators>Text</basicComparativeOperators>
               <in>Text</in>
               <isNull>Text</isNull>
               <like>Text</like>
            </comparativeOperators>
            <spatialOperators/>
            <functions>
               <min nargs="unbounded"/>
               <max nargs="unbounded"/>
               <function name="String" nargs="0"/> *
            </functions>
         </filterOperators>
         <requestTypes>
            <ping/>
            <metadata/>
            <inventory/>
            <search/>
            <customSearch/>
         </requestTypes>
      </conceptualSchema>
   </capabilities>
</response>
</verbatim>