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.
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.
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