Estimating Null Values In Relational Database Systems Based On Genetic Algorithms.
Shyi-Ming ChenShih-Wei LeePublished in: Cybern. Syst. (2005)
Keyphrases
- relational database systems
- null values
- relational algebra
- relational databases
- relational model
- databases
- normal form
- query language
- integrity constraints
- expressive power
- data model
- query evaluation
- database
- data dependencies
- complex objects
- query processing
- first order logic
- functional dependencies
- database management systems
- relational data model
- data storage
- database systems
- relational calculus
- xml data
- data structure
- aggregate functions
- object oriented
- abstract data types
- query optimization
- transitive closure
- database schema
- xml documents
- b tree