Keyphrases
- functional dependencies
- relational databases
- integrity constraints
- database design
- normal form
- relational model
- database schemes
- domain ontology
- semantic web
- domain knowledge
- conflict free
- xml documents
- knowledge representation
- entity relationship
- data dependencies
- cardinality constraints
- inclusion dependencies
- universal relation
- logical implication
- databases
- relational algebra
- user defined
- semantic information
- database schema
- relational schema
- horn theories
- relational database theory
- conceptual modeling
- background knowledge
- database systems
- case study
- knowledge base
- database