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Re: database design method

From: Jan Hidders <hidders_at_REMOVE.THIS.uia.ua.ac.be>
Date: 18 Nov 2002 00:28:32 +0100
Message-ID: <3dd82620$1@news.uia.ac.be>


D Guntermann wrote:
>I see many advantages of value-based object identifiers, perhaps in such
>areas as identification (obvious), intrinsic ordering/mapping, as well as
>copies (deep versus shallow) of values and redundancy detection mechanisms.
>However, how would this be useful in a truly platform-independent,
>distributed datastore system? Is there a global mechanism for both
>generation and reconcilation of object identifiers - even if they avoid
>pointers and are based on value?

True object identifiers are abstract, i.e., the user never gets to see them. So you don't need a global mechanism and there is no reconciliation problem. You have to think of them as for example the nodes in a graph. A directed graph is a binary relation but how the nodes are exactly represented is immaterial.

Received on Sun Nov 17 2002 - 17:28:32 CST

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