Keyphrases
- spatial data
- keyword search
- search engine
- keywords
- relational databases
- spatial databases
- spatial data mining
- structured data
- keyword queries
- xml keyword search
- xml databases
- xml data
- spatial queries
- geographic information systems
- keyword search over relational databases
- xml documents
- geo spatial
- spatial data types
- search queries
- spatial data management
- spatial objects
- keyword search in relational databases
- r tree
- spatial clustering
- spatial index
- query keywords
- spatial database systems
- inverted index
- spatial analysis
- geographical information systems
- query language
- geospatial data
- proximity search
- web search engines
- data analysis
- geographical information
- data mining
- user queries
- information retrieval