Need for RDF Schemas
- Adding metadata and using it from a program works…
- … provided the program knows what terms to use!
- We used terms like:
Chart,labelledBy,isAnchor, ...-
chartType,graphicsType, ... - etc
- Are they all known? Are they all correct?
- It is a bit like defining record types for a database
- This is where RDF Schemas come in
- officially: “RDF Vocabulary Description Language”