- From: Guha <guha@guha.com>
- Date: Fri, 18 Aug 2000 10:22:01 -0700
- To: Sergey Melnik <melnik@DB.Stanford.EDU>
- CC: www-rdf-interest@w3.org
Hi Sergey, Did you have to make any chage to the code to get it running on Solaris? I have plans of supporting reification. Just haven't done it yet. The indexes are currently built on b-trees provided by Sleepycat. I am working on a "nested hash" structure which is more appropriate for graphs. The "join algorithm" is fairly straightforward and only uses conjunct ordering for optimization. I plan to implement a lot of the optimizations used in cyc, lore, etc. Thanks! Do you have any suggestions, advice, etc? We should talk about this sometime. Guha Sergey Melnik wrote: > Guha, > > I got RDFdb running on Solaris, good job. Could you clarify the following > issues: > > 1. Query processing: what join algorithms and index structures are you > using? These determine to a high degree the scalability of your > implementation. Did you evaluate the store say against Dmoz data? > > 2. Afa I can see, reification is not supported. Why not? > > More comments when I'm back to office... > > Sergey > > On Tue, 25 Jul 2000, Guha wrote: > > > Hi, > > > > I'd like to announce the first release of RDFdb > > (http://www.guha.com/rdfdb/). > > > > RDFdb is an open source (under the MPL) scalable triple database server > > with a > > SQL-like front end. Its written in C with a perl client. > > > > You can download a linux binary or the source from the above url. > > > > I'd appreciate any comments, feedback, bug reports, bug fixes, ... > > > > thanks, > > > > Guha > > > >
Received on Friday, 18 August 2000 13:22:48 UTC