Benifits of standardization:
- will provide applications with uniform access to RDF data.
- will enable standard query as a (web) service.
Challenges:
- expressivity: how rich should the language be?
- logical operators (
not
, or
)
- functions on literals (
<
, >
, substr
)
- aggregates (
min
, max
, count()
)
- relationship to (reuse of) XQuery.