relational
1.3.1.5 Relational operators
2.relational data base
3.The relational operators == and !
4.Java and relational databases
6.Mapping xml dtd to Relational Schema
7.That means a relational database developer.
8.Mapping from DTD to Relational Database
9.Relational operators generate a boolean result.
10.Conclusion Psychology and BMS are relational.

