Exchange Rates for the Semantic Web

V2.0, Release 30-04-2011

Author: Alex Stolz

License: Creative Commons Attribution 3.0

Prefix: xch:

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Structure

• ExchangeRate

  • xro:ExchangeRate xro:hasCurrency xro:Currency (arity 0..n)
    e.g. xch:XRate xro:hasCurrency xch:Currency_CHF
  • xro:ExchangeRate xro:hasReferenceCurrency xro:Currency (arity 1)
    e.g. xch:XRate xro:hasReferenceCurrency xch:Currency_USD
  • xro:ExchangeRate xro:hasTimestamp xsd:dateTime (arity 1)
    e.g. xch:XRate xro:hasTimestamp "2011-04-29T22:04:56Z"^^xsd:dateTime

• Currency

  • xro:Currency xro:hasCode xsd:string (arity 1)
    e.g. xch:Currency_CHF xro:hasCode "CHF"^^xsd:string
  • xro:Currency xro:hasRate xsd:float (arity 1)
    e.g. xch:Currency_CHF xro:hasRate "0.867701545"^^xsd:float

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Usage

The exchange rates for the Semantic Web service is accessible via http://oanda2rdf.appspot.com/xch. It returns a list of currency objects (e.g. xch:Currency_CHF, xch:Currency_USD, ...) with a default reference currency set to USD (xch:XRate xro:hasReferenceCurrency xch:Currency_USD).
For one who needs to use a reference currency other than the default USD, the service allows dereferencing a URI consisting of the base URI and the currency code attached, e.g. http://oanda2rdf.appspot.com/xch/EUR for EUR as reference currency.

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Example URIs

• http://oanda2rdf.appspot.com/xch/AUD
• http://oanda2rdf.appspot.com/xch/CAD
• http://oanda2rdf.appspot.com/xch/CHF
• http://oanda2rdf.appspot.com/xch/EUR
• http://oanda2rdf.appspot.com/xch/GBP
• http://oanda2rdf.appspot.com/xch/JPY
• http://oanda2rdf.appspot.com/xch/RUB
• http://oanda2rdf.appspot.com/xch/USD