A Strong Containment Problem for Queries in Conjunctive Form with Negation.
Victor FeleaPublished in: DBKDA (2009)
Keyphrases
- containment of conjunctive queries
- query evaluation
- query processing
- query language
- query containment
- web search engines
- logic programming
- conjunctive queries
- set valued attributes
- response time
- database queries
- datalog queries
- tree patterns
- keywords
- range queries
- user queries
- complex queries
- query formulation
- multi dimensional
- datalog programs
- web search
- unions of conjunctive queries
- data sources
- xml documents
- information retrieval