Unrolling SQL: 1999 Recursive Queries.
Aleksandra BoniewiczKrzysztof StencelPiotr WisniewskiPublished in: FGIT-EL/DTA/UNESST (2012)
Keyphrases
- databases
- recursive queries
- database theory
- query language
- transitive closure
- query optimization
- data model
- expressive power
- datalog programs
- relational algebra
- semi structured data
- fixpoint
- aggregate functions
- first order logic
- relational databases
- query containment
- knowledge representation
- relational database systems
- semi structured
- object oriented
- spatial databases
- path expressions
- conjunctive queries
- np complete