Re: [Virtuoso-users] RDF autoupdate timestamp

2009-11-18 Thread Ivan Mikhailov
Hello Mirko, Storing typestamps on statements is a partial case of reification. Unfortunately Virtuoso does not provide any special support for reification --- that would penalize other tasks. Storing typestamps on subjects does not require reification and could be made via triggers, but these tr

[Virtuoso-users] RDF autoupdate timestamp

2009-11-18 Thread Mirko
Hi, I would like to (auto-)remove statements with a certain age from RDF graphs in Virtuoso. In SQL I would create a "timestamp" column with DEFAULT CURRENT_TIMESTAMP, ON UPDATE CURRENT_TIMESTAMP and add an event scheduler that deletes all rows with a given age. I wonder what is the best way to