Relationships




Parents 
关系 
The Class of relations. There are three kinds of Relation: Predicate, Function, and List. Predicates and Functions both denote sets of ordered ntuples. The difference between these two Classes is that Predicates cover formulaforming operators, while Functions cover termforming operators. A List, on the other hand, is a particular ordered ntuple.

Children 
Album  An Album is a List of Recordings that are packaged and sold as a unit. 
 MusicChart  MusicChart is a ranked list of Album or MusicRecording that is deemed the most popular by some criteria, such as the number of sales or the airplay it receives from radio stations, and the like. 
 SRPResults  A List containing WebListings or WebPages the is the result of a BestMatchAlgorithm, and is a component of a SearchResultsPage. 
 唯一串列  A List in which no item appears more than once,i.e. a List for which there are no distinct numbers ?NUMBER1 and ?NUMBER2 such that (ListOrderFn ?LIST ?NUMBER1) and (ListOrderFn ?LIST ?NUMBER2) return the same value. 