[QUANTITY] Data Model for Quantity v0.5 - more on Quantity vs assembly

[David Berry]

Martin,

> >        So what you are saying is that, just as we see Quantity as a
> > aggregated component of the Observation model, so also we should be
> > thinking about what the *components* of a Quantity are? That is, we
> > should build Quantity from a collection of component parts which are not
> > themselves Quantities (and so do not inherit from Quantity), but which
> > fulfill some specified role within the higher level Quantity model and
> > which are designed independantly of each other. The "Quantity model" would
> > then presumably define how these components are used within the context of
> > a Quantity, which are mandatory which are optional etc.
>
> Yup!


Agreement!!



David


----------------------------------------------------------------------
Dr David S. Berry    (dsb at ast.man.ac.uk)

STARLINK project		 |	Centre for Astrophysics
(http://www.starlink.ac.uk/)	 |	University of Central Lancashire
Rutherford Appleton Laboratory	 |	PRESTON
DIDCOT				 |	United Kingdom
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