17.5. Conclusion
The XOO7, XMach-1, and XMark benchmarks have been designed to investigate the performance of different XMS. All three benchmarks provide complex data sets to capture the essential characteristics of XML data such as recursive elements and various data types. In terms of simplicity, XMach-1 has the most straightforward database description. It models a document, which is easy for users to understand. XOO7 adapts and extends the OO7 database on modules, which can be understood quite easily. XMark simulates an auction scenario, which is a very specialized interest area, containing many elements and attributes that may be difficult for users to understand.
Table 17.6 shows the coverage of the queries in the three benchmarks. Clearly, ...
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