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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