3.7. Technical Background
The following sections take a closer look at the design of eXist's indexing and storage architecture. We start with a brief discussion of conventional approaches to query execution and the problems they face when processing queries on large collections of XML documents. Second, we examine the numbering scheme used by eXist to identify nodes in index files. We then provide details on the concrete implementation of the storage and indexing components. Finally, we explain how the query engine uses the information collected in index files to process XPath expressions.
3.7.1. Approaches to Query Execution
XML query languages like XPath or XQuery use regular path expressions to navigate the logical structure of XML documents. ...
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