什么样的关系称为n元关系？
What kind of relationships are called n-ary relationships??
不确定术语“n-ary”是什么意思，但通常双方可以拥有许多其他的关系被称为 多对多 关系以及只有一方执行的关系被称为一对多。
多对多
一对多
Not sure what you mean by the term "n-ary", but normally relationships that both sides can have many of the other are termed many to many relationships and those that only one side does are termed one to many.
many to many
one to many
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不确定术语“n-ary”是什么意思，但通常双方可以拥有许多其他的关系被称为
多对多关系以及只有一方执行的关系被称为一对多。Not sure what you mean by the term "n-ary", but normally relationships that both sides can have many of the other are termed
many to manyrelationships and those that only one side does are termedone to many.