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- > From masinter@parc.xerox.com Wed Mar 11 13:18:12 1992
- . . .
- > Um, I think when I tell you about a document, I can tell you:
- > a)Some attributes about it that you can remember and use for
- > finding it again.
- > b)its signature/fingerprint/checksum whatever
- > This helps you know whether you already have exactly what I'm
- > referring to or can get it more locally.
- > c)some information about where I think you can get it and how
- > d)a set of instructions you can use for getting it.
- . . .
- [* analogy deleted *]
- > The last two are a little strained in the analogy; don't jump on the
- > analogy, please, I just want to point out that it is reasonable and
- > customary to supply *MORE THAN ONE* of unique identifier, serial
- > number, access path, common attributes, etc.
-
- I have no trouble with this. Obviously, I'm not sure I
- need all of these for each query, since I'm trying to
- accomplish different things at different times so what I
- want back will change but that's just detail.
-
- I suspect that only a) and b) are really permanently
- associated with the information and the other two may or
- may not be provided by external services. Of course, if
- someone's favorite information delivery service wanted to
- provide all four, (either directly or through gateways)
- that's fine by me.
-
-
- - peterd
-
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