RDF Schema Definition?

[tradle]

Given the following:

<x:xmpmeta xmlns:x='adobe:ns:meta/'>
<rdf:RDF xmlns:rdf=&quot;

http://www.w3.org/1999/02/22-rdf-syntax-ns#&quot;

xmlns:ncb=&quot;//ohclesql1026/ncb/metadata/&quot;
xml:space=&quot;preserve&quot;>
<rdfescription rdf:about=&quot; &quot; xmlns:ncb=&quot;//ohclesql1026/ncb/metadata/&quot;>
<ncb:CompTime>COMP_TIME|</ncb:CompTime>
<ncbkgSeq>PKG_SEQUENCE|0000001</ncbkgSeq>
<ncb:StmtSeq>STMT_SEQUENCE|0000001</ncb:StmtSeq>
<ncb:Mail1>MAIL_TO1|GOODYEAR_TIRE;</ncb:Mail1>
<ncb:Mail2>MAIL_TO2|BLANCHE;</ncb:Mail2>
<ncb:Mail3>MAIL_TO2|GLOBAL_BENEFIT_FINANCING;</ncb:Mail3>
<ncb:Mail4>MAIL_TO2|MARKET_STREET;</ncb:Mail4>
<ncb:Mail5>MAIL_TO2|OHIO-0001;</ncb:Mail5>
<ncb:Mail6>MAIL_TO2|</ncb:Mail6>
<ncb:InsMap>INSERT_MAP|Y</ncb:InsMap>
<ncb:InsId>INSERT_ID|10001770</ncb:InsId>
<ncb:AcctId>ACCOUNT_ID|CN000082</ncb:AcctId>
<ncbaperCde>PAPER_CODE|10001453</ncbaperCde>
<ncb:EnvCde>ENV_CODE|10001538</ncb:EnvCde>
<ncb:SpecHand>SPECIAL_HANDLING|N</ncb:SpecHand>
</rdfescription>
</rdf:RDF>
</x:xmpmeta>

...I need to write a schema where each of the <ncb:...> elements come from a MSSQL database. What would the syntax be? I'm having no luck in deciphering the schema definitions from the w3c in regard to this definitions need.

And, if you'd be so kind, could you tell me what I did wrong in terms of my whitespace declaration? I have underscores in there just so that I could generate a (barely) well-formed document.

Thanks!
Tim