[jboss-user] [EJB 3.0] - Re: help composite keys

[fhh]

anonymous wrote : 
  | This is Database Theory but what can i do to this in EJB3?
  | 

This not about database theory nor about EJB 3   but about your data model. I think you should focus first on what you actually want to map.

I assume the follwing is true:

1.) One Route consists of many ports.

2.) One port can be a destionation of many routes.

3.) Port and route are mapped correctly (e.g. have @Id, overriden equals(), hashCode() etc.)

Questions:

1.) Is a port unique on each route? (Can a single port be twice on the iternary of a route?)

2.) What is the distance for? The distance of the total route? Or between two ports?

Regards

Felix



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