合成资料型态。一个栏位由不同的有意义资料栏位所组成，其中每一部分称之为一个元素。

CM Composite data type. A field that is a combination of other meaningful data fields. Each portion is called a component.

youdao

合成资料型态。一个栏位由不同的有意义资料栏位所组成，其中每一部分称之为一个元素。

CM Composite data type. A field that is a combination of other meaningful data fields. Each portion is called a component.

youdao