On Jul 25, 2006, at 9:20 AM, Rob Seaman wrote:
> I still have no clue what the distinction is supposed to be between
> meta.code and meta.id.
My understanding:
- A code is also called an enumeration or a labeling or a
classification. It is tied to a namespace. In the Hubble namespace,
galaxies have codes Sa, Sb, SBa, E0 etc etc
- An ID is unique identifier for something that is strongly linked
to a namespace. Within the Messier namespace, there are identifiers
M31, M51, M87.
- A name is anything that identifies something, need not be unique.
Thus a single galaxy can have several names, eq M87 and NGC4486 are
different names for the same thing.
- A Title is a multi-word version of a name: "Center of Virgo
cluster" would be a title for M87.
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Received on 2006-07-25Z18:48:40