database - At least more than two cardinality in E/R diagram -


i making e/r diagram , have question. have two entities, namely: member , matches.

to consider "match", need @ least 2 members. now, problem is: how should note this? it's not 0.. *, assume, because match not match when have 0 members, right?

it's not 1.. 1 or 1.. *, can't play @ least 1 or @ 1....

so, how should note it? 2.. * not exist, best practice here then?


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