Chintan,

RDQL ("RDF Data Query Language") queries models at the RDF and so it is
rather difficult, at the moment, to query at the DAML level with RDQL - you
have to know how DAML uses RDF and there is no inference at all.

If you wish to access a DAML model in DAML terms you need to go through the
DAML API. If you have a data-oriented requirement then RDQL, on an RDF
model, can be used instead of a sequence of Jena core APIs calls.

Andy

> -----Original Message-----
> From: chintanop <chintanop@...> [mailto:chintanop@...]
> Sent: 18 January 2003 06:24
> To: jena-dev@yahoogroups.com
> Subject: [jena-dev] Query v/s Navigation
>
>
> Dear All,
>
> Jena DAML model seems to be really difficult to navigate..
> especially when we have so many Anonymous classes in between..
>
> I was wondering when should one go for the Jena API
> calls(getClasses (), getProperties() etc.. ) and when to go
> for R*QL type of
> queries ?
>
> Like whats the essential difference between Navigating and Querying
> the model..since in both cases one needs to know the Graph before
> hand to get some required information.. ?
>
> I might be missing something subtle here.. plz guide me
>
> Thanks and Regards
> Chintan
>
> Graduate Research Assistant
> UMKC Distributed Intelligent Computing Lab
> School of Interdisciplinary Computing and Engg.
> University of Missouri - Kansas City
> Kansas City - MO 64112
>
>
>
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