Keyphrases
- conceptual schema
- formal semantics
- deductive databases
- logic programming
- complex objects
- conceptual model
- model theoretic
- semantic relationships
- semantic information
- higher order
- expressive power
- real time
- query evaluation
- schema mappings
- relational databases
- high level
- information systems
- search engine
- argumentation frameworks
- logical framework
- neural network
- data sets