Keyphrases
- database
- database queries
- databases
- query interface
- relational databases
- database systems
- access methods
- response time
- indexing techniques
- path queries
- complex queries
- data model
- pre computed
- query processing
- access path
- heterogeneous databases
- web databases
- relational database systems
- answering queries
- retrieval systems
- database applications
- index structure
- query expansion
- relevance feedback
- user defined functions
- keywords
- database objects
- range queries
- path expressions
- semistructured data
- data management
- query language
- data structure
- data sets