Query Evaluation for Distributed Heterogeneous Relational Databases.
Yangjun ChenWolfgang BennPublished in: CoopIS (1998)
Keyphrases
- query evaluation
- distributed heterogeneous
- relational databases
- query processing
- xml data
- null values
- data sources
- query language
- conjunctive queries
- xml databases
- data complexity
- relational model
- relational data
- deductive databases
- object oriented
- databases
- transitive closure
- constraint databases
- data management
- relational database systems
- database
- functional dependencies
- query optimization
- xml documents
- probabilistic databases
- keyword search
- sql queries
- database systems
- signature file
- efficient query evaluation
- xml queries
- regular expressions
- index structure
- query engine
- query answers
- inverted lists
- querying xml documents
- data dependencies
- normal form
- data warehouse
- integrity constraints
- data integration
- disjunctive deductive databases
- data model
- data sets