5 XQuery Extensions

The database research efforts that drive MonetDB/XQuery have led us to include a number of non-standard XQuery features in the system, that may be useful to you.

• Document Management: handy functions to add/delete documents and query the catalog.
• PF/Tijah Text Indexing: The PF/Tijah text retrieval system is now integrated in MonetDB/XQuery.
• Session Expression Cache: Accelerate subsequent queries by caching and re-using any XQuery sub-expressions.
• HTTP Access: HTTP access to documents in the database.
• XRPC Extension: SOAP-based Distributed XQuery.
• Transitive Closure Extension: Computes the transitive closure of node-valued XQuery expressions.
• StandOff Extension: New XPath steps for fast Region Annotation querying.
• Persistent Node Identifiers (NIDs): Persistent Node Identifiers
• The Collection Node: a super-node that is the parent of all document nodes in a collection
• Temporary Documents: materializing and re-using temporary XML results