On the Expressive Power of Node Construction in XQuery.
Wim Le PageJan HiddersPhilippe MichielsJan ParedaensRoel VercammenPublished in: WebDB (2005)
Keyphrases
- expressive power
- query language
- first order logic
- transitive closure
- relational algebra
- data model
- data complexity
- computational properties
- xml data
- database
- artificial intelligence
- conceptual model
- directed graph
- query evaluation
- conjunctive queries
- constraint databases
- regular expressions
- xml documents
- relational databases
- databases