March 2003
Beginner to intermediate
688 pages
15h 53m
English
book
XML Data Management: Native XML and XML-Enabled Database Systems
by Akmal B. Chaudhri, Awais Rashid, Roberto Zicari
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18.3. Benchmark Data Set
In this section, we first discuss characteristics of XML data sets that can have a significant impact on the performance of query operations. Then we present the schema and the generation algorithms for the benchmark data.
18.3.1. A Discussion of the Data Characteristics
In the relational paradigm, the primary data characteristics are the selectivity of attributes (important for simple selection operations) and the join selectivity (important for join operations). In the XML paradigm, several complicating characteristics must be considered as discussed in the sections that follow.
Depth and Fanout
Depth and fanout are two structural parameters important to tree-structured data. The depth of the data tree can have a significant ...
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