Package org.jrdf.query.relation.operation

Interface Summary
AntiJoin An extension to DyadicJoin - use to differentiate itself from other DyadicJoins The complement of semijoin.
DyadicJoin Merely a marker interface - used to differentiate between two types of join.
NadicJoin Merely a marker interface - used to differentiate between two types of join.
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