Query Languages for XML

Martin Bryan mtbryan at sgml.u-net.com
Mon Nov 17 08:50:46 GMT 1997

Joe Lapp wrote:
>You might use XSL to create a replacement
>document and then upload the replacement, but this is not
>conducive to having many users concurrently querying and updating
>the document (you'd have to lock the whole document).

There is no need to lock the whole document, just that part of the document
that consititutes an updatable record for the database it is being used to
update or being updated from. Such a record could consist of a a number of
contiguous fields, a set of discrete fields taken from appropriate parts of
a document, or even a single field. There in no reason why fields not likely
to be affected by change need to be locked in any way.

Martin Bryan

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