Keyphrases
- xml documents
- xml data
- structured data
- path expressions
- regular path expressions
- xpath queries
- xml queries
- xml streams
- xml databases
- xpath expressions
- semi structured data
- xml query languages
- data model
- xml processing
- query evaluation
- xml schema
- xml fragments
- structural join
- native xml databases
- query language
- database
- random walk
- markup language
- xml trees
- relational data
- semi structured
- relational databases
- databases
- weighted graph
- xml query processing
- graph structure
- graph theory
- xml format
- integrity constraints
- query optimization
- graph mining
- graph representation
- data exchange
- index structure
- query processing
- xml elements
- semistructured data
- tree structured data
- cost model
- regular expressions
- extensible markup language
- query graph
- directed graph
- data integration
- querying xml data