問題文
A consultant is defining the connection between the person object and the order object. The client asks about it. Why does the cardinality have to be stated rather than inferred?
選択肢
- Because the platform cannot read the source system's foreign keys, so the relationship would otherwise be left without any way to tell which order rows belong to a person.
- Because the cardinality decides which of the two objects is allowed to be the primary object of a ruleset, and stating it incorrectly would prevent unification from running at all in the environment.
- Because the cardinality decides the physical storage layout of the two objects, which determines how much space the harmonized layer occupies once both objects have been populated by their streams.
- Because the cardinality decides whether an attribute appears as a single value or as one of many for a member, which changes what a filter means.