How can one combine full text and XML structure-based queries in document-centric applications?
This is possible in either SQL or XQuery. In SQL, for example, one can join a table of XML documents with author information by writing a SQL join between a publications table and an authors table. The author reference would just be extracted with XPATH after application of a free-text-based content-filtering. In XQuery, the documents table and authors tables would be represented as documents via mapping schemas and the one could write flwr statements for joining the two.