Axiomatisation of Functional Dependencies in Incomplete Relations.
Mark LeveneGeorge LoizouPublished in: Theor. Comput. Sci. (1998)
Keyphrases
- functional dependencies
- multivalued dependencies
- null values
- universal relation
- integrity constraints
- data dependencies
- relational data model
- database design
- relational databases
- conflict free
- normal form
- cardinality constraints
- relational model
- inclusion dependencies
- set of functional dependencies
- database schemes
- user defined
- xml documents
- entity relationship
- functional and multivalued dependencies
- database schema
- logical implication
- relational schema
- missing data
- database systems
- missing values
- nested relations
- join operations
- query answering
- data types
- horn theories
- approximate functional dependencies
- database
- answering queries using views