Keyphrases
- rewrite rules
- rdf data
- sparql queries
- semantic web
- linked data
- query language
- storage and retrieval
- data model
- query processing
- transformation rules
- sql queries
- consistency constraints
- web resources
- query optimization
- graph patterns
- regular expressions
- complex queries
- query formulation
- web pages
- database systems
- object oriented
- data sources
- artificial intelligence
- data integration
- description logics
- metadata