Fixpoint Calculus for Querying Semistructured Data.
Nicole BidoitMourad YkhlefPublished in: WebDB (1998)
Keyphrases
- fixpoint
- semistructured data
- query language
- semistructured databases
- logic programs
- regular path queries
- deductive databases
- regular expressions
- data model
- finite state machines
- query evaluation
- semi structured
- multimedia databases
- structured data
- datalog programs
- expressive power
- raw data
- conjunctive queries
- database
- databases
- heterogeneous data
- horn clauses
- relational algebra
- recursive queries
- logic programming
- tree patterns
- object oriented
- sql queries
- transitive closure
- query processing
- semi structured data
- xml documents
- data complexity
- pattern matching
- web data
- nonmonotonic reasoning
- machine learning
- inductive logic programming