Keyphrases
- relational schema
- relational data
- entity relationship
- functional dependencies
- normal form
- relational databases
- xml schema
- extended entity relationship
- relational database systems
- object oriented
- conceptual schema
- database schema
- xml documents
- relational model
- data model
- conceptual models
- integrity constraints
- database design
- structured data
- database applications
- xml data
- data modeling