Figure 1 shows a section of a hierarchical DominoDocument business object that contains an Items attribute of type DominoItem BO and cardinality n.

图1所示的是一个分层次的DominoDocument业务对象的一部分，这个业务对象包含了类型DominoItem BO的Items属性和基数n。

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To define attributes as an array type, you just change the default value of the Maximum attribute from 1 to n, as Figure 3 shows.

要将属性定义为数组类型，只需将maximum属性的缺省值从1更改为n，如图3所示。

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When the common nouns and the "(yi)+M+N" phrases act as attribute and predicate, they don't refer to any entity, but indicate attributes.

普通名词作定语、普通名词和“（一）量名”词组作谓语都不指称实体，而表示所修饰或说明的名词的性质，是非指称性成分。

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