Thanks! This makes perfect sense and has deepened my understanding of how to use graphs.
Nonetheless, I still have a practical problem, I am using REST to interact with the datastore and if I query if a relationship exists before creating every relationship, it's going to be really slow. I am creating relationships in bulk now. Perhaps there is some Gremlin kung foo I can run after I batch create my relationships which will clean out all the redundant relationships (those which have all duplicate properties). Can someone help? Thanks! On Sat, Jul 16, 2011 at 6:23 AM, Niels Hoogeveen <[email protected]>wrote: > > It makes perfect sense to be able to create multiple relatationships > between two nodes, once you consider that relationships have properties. > For example: > Elizabeth Taylor --MARRIED_TO [from: 1964, to: 1974]--> Richard > BurtonElizabeth Taylor --MARRIED_TO [from: 1975, to: 1976]--> Richard Burton > Having a multigraph (a graph allowing multiple relationships between two > nodes) is especially useful for temporal information. Many relationships we > customarily define as singular are in fact temporal. Your example the LIKES > relationship is in principle temporal too. > Alice --Likes [from: 1990, to: 2004]--> BobAlice --Likes [from: 2010]--> > Bob > Alice liked Bob for many years, but they had a fall out over something Bob > did in 2004. > For a couple years Alice was really angry with Bob and didn't like him > anymore.When they met again in 2010, Alice realized that despite what > happened in 2004, Bob is still a swell guy and now she likes him again. > You cannot turn off the creation of multiple relationships between two > nodes, but you can check for the existence of a relationship before creating > one. > > > From: [email protected] > > Date: Fri, 15 Jul 2011 22:57:33 -0400 > > To: [email protected] > > Subject: [Neo4j] unique relationships? > > > > If I create the same relationship between two nodes, say a-LIKES->b, more > > than once, a new relationship with a new id is created such that when I > look > > up all of a's LIKES relationships I get b multiple times. I know I can > > unique this away, but I wonder what the logic of doing it this way is and > if > > I can turn it off. > > > > I'm on 1.4 > > > > Thanks! > > _______________________________________________ > > Neo4j mailing list > > [email protected] > > https://lists.neo4j.org/mailman/listinfo/user > > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
