An Enhanced Inference Mechanism for Generating Relational Algebra Queries.
Haruo YokotaSusumu KunifujiTakeo KakutaNobuyoshi MiyazakiShigeki ShibayamaKunio MurakamiPublished in: PODS (1984)
Keyphrases
- relational algebra
- inference mechanism
- query language
- relational calculus
- database query languages
- probabilistic databases
- relational database systems
- expressive power
- relational operators
- data model
- relational data model
- relational model
- duplicate elimination
- aggregate functions
- normal form
- null values
- complex objects
- recursive queries
- query evaluation
- join operator
- database
- first order logic
- summary tables
- relational databases
- transitive closure
- cognitive model
- production rules
- query processing
- inference process
- database technology
- type checking
- universal quantification
- statistical databases
- conceptual model
- xml data
- data management
- object oriented
- fuzzy logic
- knowledge base