Correction to Null Values in Nested Relational Databases by Mark A. Roth, H. F. Korth, and A. Silberschatz.
Mark LeveneGeorge LoizouPublished in: Acta Informatica (1991)
Keyphrases
- null values
- relational databases
- normal form
- nested relations
- integrity constraints
- databases
- data dependencies
- incomplete information
- functional dependencies
- relational algebra
- query evaluation
- object oriented
- database
- relational model
- database technology
- relational database theory
- sql queries
- predicate logic
- containment of conjunctive queries
- complex objects
- xml databases
- transitive closure
- database design
- data management
- inclusion dependencies
- xml documents