Re: Searching OO Associations with RDBMS Persistence Models
Date: Sat, 17 Jun 2006 10:38:30 +0200
On 16 Jun 2006 13:03:30 -0700, Aloha Kakuikanu wrote:
>> A logical connection between two endpoint is a list of circuits. This >> application object is transient because the connections come and go. >> They aren't stored in the database.
> Assume network is an [indirected] graph.
Directed (consider ADSL, RFID etc)
> Then logical connection is a
> path in the graph.
No. That's routing issues. A connection is either peer-to-peer or multicast. It does not mention any nodes passed. Some protocols use dynamic routing.
> There is nothing challenging in modelling graph in
> RDBMS and creating application objects that correspond to paths in a
Incidence matrix? Huh.
Because an object can be mobile. Connection can obviously be described by a trivial relation between nodes. But it is an implementation detail in, say, a middleware, which deals with objects, not connections.
-- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.deReceived on Sat Jun 17 2006 - 10:38:30 CEST