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Re: Primary and Foreign Keys

  • From: "Thomas B. Passin" <tpassin@h...>
  • To: xml-dev <xml-dev@l...>
  • Date: Wed, 25 Jul 2001 08:21:33 -0400

Re: Primary and Foreign Keys
[Ronald Bourret]

> 6) Leave the key value out of the XML document. This requires that
> nesting is used to indicate key relationships and makes sense when: (a)
> key values are generated by the database, and (b) the data is being
> transferred to a different database. Such values not guaranteed to be
> unique in the second database.

I almost included this thought in my post, but didn't because it occurred to
me that even if you nested a child entity within a parent, you might still
need to refer to it from somewhere else rather than duplicate its data.  So
it seemed that eliminating the ID and nesting could be orthogonal.  A
case-by-case decision, methinks.


Tom P


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