Onto mappings

Normally, a mapping is ONTO: each member of the target set is mapped to by at least one member of the source set. The Aggregation...Choose Mappings dialog which lists mappings shows if they are onto. The Aggregation...Create Mappings warns if you are about to create a mapping which is not onto.

URL of this topic: www.copsmodels.com/webhelp/viewhar/hc_ontomaps.htm

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