Algebraization and Integrity Constraints for an Extended Entity-Relationship Approach.
Martin GogollaPublished in: TAPSOFT, Vol.1 (1989)
Keyphrases
- integrity constraints
- extended entity relationship
- entity relationship
- database schema
- relational schema
- xml schema
- functional dependencies
- object oriented
- deductive databases
- conceptual schema
- query answering
- relational model
- conjunctive queries
- object relational
- relational databases
- xml documents
- normal form
- database applications
- xml data
- multi dimensional
- data model
- consistent query answering