- XML’s model is
- a tree, i.e., a strong hierarchy
- applications may rely on hierarchy position (e.g.,
liin HTML) - relatively simple syntax and structure
- not easy to combine trees
- RDF’s model is
- a loose collections of relations
- applications may do “database”-like search
- not easy to recover hierarchy
- easy to combine relations in one big collection
- great for the integration of heterogeneous information