This paper describes a product data model as a product structural tree that is composed of data objects and relation objects, and expresses the product structural tree as a matrix.

将产品数据模型表示为包含数据对象和关系对象的树状结构，并用矩阵的形式加以描述。

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This paper describes a product data model as a product structural tree that is composed of data objects and relation objects, and expresses the product structural tree as a matrix.

将产品数据模型表示为包含数据对象和关系对象的树状结构，并用矩阵的形式加以描述。

youdao