def relationships
      r = Relationships.new
      r << Relationship.new(cache_definition, PIVOT_TABLE_CACHE_DEFINITION_R, "../#{cache_definition.pn}")
      r
    end
def relationships
      r = Relationships.new
      r << Relationship.new(cache_definition, PIVOT_TABLE_CACHE_DEFINITION_R, "../#{cache_definition.pn}")
      r
    end
The relationships for this pivot table.
 @return [Relationships]