OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.


Help: OASIS Mailing Lists Help | MarkMail Help



   Re: [xml-dev] XML-enabled databases, XQuery APIs

[ Lists Home | Date Index | Thread Index ]

<< The only impact I can see is that it means more ways need to be provided to
parse such XML and if the format does not fit into the general parsing
framework (ie, some XML declaration encoding indicating the
binary encoding of the XML), it will be architecturally more challenging.

There's an impact on indexing and query optimization.

Consider a tax return table with a column for year and a column of type XML that
contains the tax return. If the DBMS manages the XML return column as
multi-dimensional binary data, it will need sophisticated indexing and access
methods (bitmap / bitcube, UB-tree, r-tree, K-D-B tree) to deliver performance.

That puts the query optimizer in the loop.


News | XML in Industry | Calendar | XML Registry
Marketplace | Resources | MyXML.org | Sponsors | Privacy Statement

Copyright 2001 XML.org. This site is hosted by OASIS