Package org.jrdf.query.relation.operation

Interface Summary

AntiJoin	The complement of semijoin.
DyadicJoin	Combines two relations.
NadicJoin	Combines n-relations.
Operation	Base interface.
Project	Derives a new relation by removing attributes.
Restrict	Returns the list of relations with the same set of attributes.
SemiDifference	A more general form of difference - maybe replace by more basic operations (Not and Join for instance).
Union