| 摘要 |
A preferred path between two selected entities is determined. Initially, there is provided a representation of the data structure in the form of a plurality of entities having relations between them indicative of roles and the relations reflecting a cardinality of one of a one-to-one, one-to-many and a many-to-one relationship between the entities. A query is entered that provides an indication of a first selected entity and a second selected entity. A preferred path is selected through the entities and relations that couples the first selected entity to the second selected entity. The preferred path is selected from a plurality of paths as a function of the number of changes in cardinality along the plurality of paths and a indicator indicative of a preferred role relating two entities.
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