W3C home > Mailing lists > Public > www-rdf-interest@w3.org > November 2000

RDF query and RDF storage in memory

From: Ayalew Kassahun <A.Kassahun@InfoRay.NL>
Date: Mon, 27 Nov 2000 11:36:41 +0100
Message-ID: <7FAFD1931B62D411B2890050BAB19FB12504E3@ms1.inforay.nl>
To: www-rdf-interest@w3.org
Hi List:

I have been studing RDF and following the discussion in this list for some
time. The concept of RDF is very appealing and I want to use it in my
applications, not specifically to *discover* resources on the web but first
mainly for integration of the different data I have. In the past I used XML
to just dump the data to XML document. But I want to bring some semantics to
this data and I think rdf is the way.

There are some implementation of RDF [parser] I found which are based on SAX
parser. But they are very basic and I could not find an answer to a
practical problem I have - how do I implement RDF, so that I can store the
whole RDF document in memory (kind of RDF DOM), use standard RDF query to
'query' it?

The second problem is more of a standardization problem. For example there
is a big diference bewteen the RDF Query Specification
(http://www.w3.org/QL/QL98/pp/rdfquery.html) and the query language used in
rdfDB project (http://web1.guha.com/rdfdb/query.html). Can someone explain
if there is "an accepted" query language specification?

My first problem is in a way related to the habit using XML. In XML we can
put everything in memory in a tree structure. But RDF is based on triples.
How can I store them for efficient querying? Does anyone know some links for

Any information is welcome? 
Thanks in advance.

Ayalew Kassahun
Received on Monday, 27 November 2000 05:26:15 UTC

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