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DB2 by Pav Kumar-Chatterjee, Matthias Nicola

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Chapter 14. XML Performance and Monitoring

This chapter describes several ways in which you can monitor and analyze the performance of XML operations such as queries, updates, or loading data. We look at query access plans and the statistics you can collect about XML data. Finally, we provide a summary of best practices for XML performance.

Query performance is of particular importance to many applications and is covered in more than one chapter in this book. Guidelines for writing efficient XQuery and SQL/XML queries are provided in Chapters 6 through 9 on querying XML data. Unless explicitly mentioned, the query examples in these chapters reflect best practices for writing queries. The use of XML indexes to improve query performance ...

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