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Fetch is the first stage in a harvest. It accesses the external source and orders the information in a simple RDF/XML file. The configuration task file determines properties of the fetch (ex. for the JDBCFetch it includes queries, table names, where clauses, fields, delimiters).
Process Diagram
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- External Data Source - This is the foreign source
- Fetch - Retrieves data from foreign source
- Raw Data - A simple database or as simple XML
- Translate - Turns the raw data into Ontological RDF
- RDF - RDF models which can be dumped into RDF/XML.
- Score - First find similarities and rate them, second determine and apply matches based on a threshold of difference.
- Qualify - Changes any unmatched data
- Transfer (Update) - move into a vivo model (through an update process if possible.)
- Vivo - Final model in RDF visible from the webapp. |
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