Keyphrases
- path expressions
- xml documents
- xml data
- semi structured data
- complex objects
- object oriented databases
- xml queries
- cost model
- query language
- regular expressions
- semistructured data
- xpath queries
- query execution
- web mining
- xml databases
- response time
- query optimization
- structured data
- relational database systems
- semi structured
- object oriented
- relational databases
- keyword search
- databases
- integrity constraints
- data model