A Pictorial Query Language for Querying Geographic Databases using Positional and OLAP Operators.
Elaheh PourabbasMaurizio RafanelliPublished in: SIGMOD Rec. (2002)
Keyphrases
- query language
- data model
- databases
- database
- data warehouse
- database systems
- expressive power
- object oriented
- data integration
- relational algebra
- data types
- query interface
- aggregate functions
- relational model
- spatio temporal databases
- on line analytical processing
- multidimensional databases
- database management systems
- data sources
- query evaluation
- relational operators
- conjunctive queries
- relational databases
- regular expressions
- data management
- data warehousing
- constraint databases
- temporal queries
- transitive closure
- data retrieval
- xml data
- database applications
- knowledge discovery
- recursive queries
- data mining
- object types
- approximate query answering
- visual query language
- database querying
- primitive operations
- structured databases
- geographic information
- data cube
- decision support
- multi dimensional