[e2e] Layering vs. modularization
touch at ISI.EDU
Fri May 16 17:15:20 PDT 2008
David P. Reed wrote:
> Joe Touch wrote:
>>> The layering concept is a particularly narrow form of structuring.
>>> It implies that there is a single correct linear sequence for
>>> building up a complete functional system.
>> It presumes only that there is a total ordering. Such ordering can
>> include branches and variations - only that any particular path has a
>> unique order.
> Huh? I think you are describing a lattice or poset, which is called a
> Partial ordering, not Total. Interesting, but not a "layering".
Lattice is probably closest. Partial order implies a few things I'm not
sure I want.
> Youre describing a modular structure, not a layered architecture,
The order defines the layers; the fact that there is an order isn't
sufficient to define either layering or modularity.
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 250 bytes
Desc: OpenPGP digital signature
Url : http://mailman.postel.org/pipermail/end2end-interest/attachments/20080516/2bbd3a48/signature.bin
More information about the end2end-interest