Keyphrases
- conceptual model
- xml documents
- data model
- xml schema
- xml data
- relational databases
- object oriented
- query language
- conceptual models
- high level
- domain ontology
- entity relationship
- knowledge base
- data warehouse
- data sources
- conceptual data model
- domain knowledge
- general purpose
- information systems
- database
- integrity constraints
- structured documents
- artificial intelligence
- real world
- data sets