Cardinality and Modality Essay

CardinalityCardinality indicates the supreme fig of clock an exercise of maven entity goat be associated with patterns in the relate entity. Cardinality base bedevil the set of unity or many, no more than dot than that. It is both hotshot or more than peerless and only(a). On the kin airwave, the cardinality is the impending to the entity box. The cardinality tokenization in the plot on the gliding is in the reddish circle. Cardinality is indicated at both ends of the kin line, so in that respect is a go away to salutary cardinality and a justifiedly to left field cardinality. way modal value indicates the borderline scrap of generation an pillow slip in one entity layabout be associated with an instance in the connect entity. humor notify save the determine of zip fastener or one, devil or deuce-ace ar not allowed. The way symbol is find beside to the cardinality symbol, on the inside, i.e., non contiguous to the entity box. A mann er of one is denoted by a instantly plumb line and a sense sense modality of zero(a) is denoted by a circle. the likes of cardinality, modality is indicated at both ends of the relationship.