Dataset granularities: Abstract vs. Versioned vs. Layer

When csv2rdf4lod converts tabular data to RDF, it also asserts metadata about the RDF using the conversion vocabulary. In addition to grouping the triples that it produces into a void:Dataset, it organizes them according to three specific types of void:Dataset:

• conversion:AbstractDataset (subclass of void:Dataset)
• conversion:VersionedDataset (subclass of void:Dataset)
• conversion:LayerDataset (subclass of void:Dataset)

As described in [the naming phase](Conversion process phase: name), three provenance-related aspects are used to organize any third party data that are retrieved. Each aspect is given a short, URI-friendly identifier string:

• source identifier
• dataset identifier
• version identifier