Want to parse RDF file and save to Visual FoxPro? Want to schedule and automate this importing task?
To import Xml format RDF file (.rdf, .owl) to Visual FoxPro, https://www.withdata.com/blog/rdftovfp/visual-foxpro-import-rdf.html
To import RDF Turtle file (.ttl, .n3) to Visual FoxPro, https://www.withdata.com/blog/rdftovfp/ttl-to-visual-foxpro.html
To import RDF N-Triples file (.nt, .ntriples) to Visual FoxPro, https://www.withdata.com/blog/rdftovfp/n-triples-to-visual-foxpro.html
To import RDF N-Quads file (.nq, .nquads) to Visual FoxPro, https://www.withdata.com/blog/rdftovfp/n-quads-to-visual-foxpro.html
RDF → Visual FoxPro reference
Type mapping
| Value kind | in RDF | in Visual FoxPro |
|---|---|---|
| Int | "1234"^^xsd:int | Numeric(10,0) |
| Bigint | "9007199254740993"^^xsd:long | Numeric(19,0) |
| Decimal | "1234.56"^^xsd:decimal | Numeric(p,s) |
| Float | "1.234e10"^^xsd:double | Float |
| Text | plain literal without a datatype | Character(n) |
| Long text | plain literal; newlines allowed inside | Memo |
| Date | "2026-09-18"^^xsd:date | Date |
| Datetime | "2026-09-18T14:30:00Z"^^xsd:dateTime | DateTime |
| Binary | "base64..."^^xsd:base64Binary | General |
| Boolean | "true"^^xsd:boolean | Logical |
| JSON | a literal, or reified as its own sub-graph | (none) |
Dialect differences
RDF is a file format and Visual FoxPro is a database server, so the target has to be told the types the file never carried – the rows below are where the two sides diverge.
| Property | in RDF | in Visual FoxPro |
|---|---|---|
| port | — | (file-based) |
| identifiers | XML attribute quoting; entities for reserved characters | — |
| row limit | — | (driver dependent) |
| dates | xsd:dateTime typed literals | Date (D), DateTime (T) |
| long text | — | Memo (M) |
| binary | xsd:base64Binary typed literals | General (G) |
| separator | XML elements (rdf:Description / rdf:resource) | — |
| encoding | Declared in the XML declaration | — |
| typing | Every value is a resource or a typed literal | — |
| shape | Graph of triples; there are no rows or columns | Tables of rows and columns |
| ceiling | Whole document is usually parsed into memory | — |
No counterpart
- RDF values of kind JSON have nowhere to go in Visual FoxPro.
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