XBench - A Family of Benchmarks for XML DBMSs

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XBench -
A Family of Benchmarks for XML DBMSs

The workload of an XML benchmark should include queries, updates and bulk loads. In this first version of XBench, only queries are considered. These queries challenge a DBMS with XML-specific features as well as conventional DBMS functionalities. The workload is classifed along two dimensions: by functionality and by document class. All queries are expressed in natural language English, followed by XQuery expression. The workload subsumes all of XQuery's functionality, as captured by the XML Query Use Cases.

The following table lists all queries with respect to the features that they are supposed to test.

Queries	Functionality
...Q1	Top level exact match
...Q2	Deep level exact match
...Q3	Function application
...Q4	Relative ordered access
...Q5	Absolute ordered access
...Q6	Existential quantifier
...Q7	Universal quantifier
...Q8	Regular path expressions (unknown element name)
...Q9	Regular path expressions (unknown subpaths)
...Q10	Sorting by string types
...Q11	Sorting by non string types
...Q12	Document structure preserving
...Q13	Document structure transforming
...Q14	Missing elements
...Q15	Empty (null) values
...Q16	Retrieve individual docs
...Q17	Uni-gram search
...Q18	N-gram search
...Q19	References and joins
...Q20	Datatype Cast

For each document class, there is a set of domain specific queries, which can be found at the [Downloads] section.

University of Waterloo

School of Computer Science

Database Research Group

Benjamin Bin Yao

Last modified: Mon Dec 9 09:11:20 EST 2002