Itinerary contents

[Manny Pacman Pacquiao]

Which one is true?

1. An Itinerary contains at most 1 departure flight and the return flight(if two way)

or

2. An Itinerary contains many departure flights and the return flights(if two way), in this case the Itinerary is like a shopping cart. In my design I didn't use this idea... things are getting difficult because of this. Need help please. I really need to see the initial Domain Model again...

[Beppe Catanese]

Hi Manny

my interpretation of the BD is the following:

Itinerary would AMS-NY return

Segments:
AMS-Rome
Rome-NY
NY-Rome
Rome-Ams

Each segment is covered by one flight:
AMS-Rome KL101
Rome-NY BA7
NY-Rome BA8
Rome-Ams KL103

So I model:
relationship itinerary-segment as 1:n
relationship segment-flight as 1:1

I've seen a discussion (http://www.coderanch.com/t/153536/java-Architect-SCEA/certification/Passed-Part) about changing the cardinality of the relationship segment-flight.... but to be honest I like the approach I take, seems straight forward to me.

Hope this helps.

Beps