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Flight and segment in new light

 
D. Rose
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Hi all,

Really sorry to take up this much beaten up topic again. But I had to!
I was reading through some definitions on the web and one thing seems clear to me. Thing is that airlines and government are both using their own definitions for their advantage.

For federal tax definition of a segment is one take off and one landing so customr pays double if flight has one stop and even if fligh number remains same so to say.

For airlines it is only one segment if flight number remains same. so they will award only mileage from A to B irrespective of the number of stops a flight makes.

So in my opinion airlines must track segments differently in different context so as to relect taxes and mileage both correctly.

any thoughts.
 
Frank Silbermann
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Maybe traveling consultants have a preconception as to what "flight", "segment", and "leg" mean, but I still don't understand the value to the SCEA process of leaving these terms ambiguous.

I mean, wouldn't an architect simply _ask_ a business person for the definitions? But we cannot ask on this forum -- that would be cheating!

Does my irritation at things like this mean I'm not good architect material?
 
Tomi Tuomainen
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Frank,

You certainly are "good architect material" because you're worried about insufficent analysis. As a result of requirements analysis there should some kind of vocabulary of common terms describing precisely what flight, leg and segment mean.

Again, Sun doesn't want to make things too easy so they've chosen to document poorly.
 
Parag Doshi
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Guys,
Just to show how frustrated I have been about the ambiguity between flight, segment and leg, I have for the past one month scourned the web for every possible definition of the terms. I have even went into the sabre information system (its online) to understand how they do it. And yeah, each one has its own definition and own way of expressing it. Some use segment and leg interchangeably, some have flights having multple segments/legs, some have itinerary having flightdetails, others have segments, some have them aggregated in trips etc etc. its too darn confusing.
I think the major portion of the assigment is to see how we design these classes and our most marks would be alloted depending on how we approach them.The rest of the businees delegators, processors, services are just plain fluff surrounding this core design.
Anyway, what i learnt from other posts is to choose a particular definition,stick to it till the end and document it in the assumptions section.

Parag
 
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