Keyphrases
- semistructured data
- query processing
- database systems
- query language
- regular expressions
- data model
- structured data
- semi structured
- similarity search
- semistructured databases
- cost model
- raw data
- query optimization
- heterogeneous data
- data management
- query evaluation
- index structure
- regular path queries
- query execution
- user queries
- r tree
- multimedia databases
- xml data
- inconsistent information
- database
- databases
- tree patterns
- database management systems
- xml documents
- pattern matching
- relational database systems
- information extraction
- data sources
- machine learning
- data mining