An Extended Relational Algebra for Fuzzy Multidatabases.
Awadhesh Kumar SharmaA. GoswamiDharmendra Kumar GuptaPublished in: ISPAN (2004)
Keyphrases
- relational algebra
- relational model
- data model
- expressive power
- normal form
- query language
- relational database systems
- first order logic
- relational calculus
- complex objects
- fuzzy sets
- database query languages
- transitive closure
- algebraic operations
- relational data model
- null values
- database technology
- fuzzy relations
- relational algebra expressions
- fuzzy rules
- summary tables
- join operator
- aggregate functions
- recursive queries
- relational databases
- entity relationship
- sql queries
- management system
- functional dependencies