Format or syntax rules specify the structure of a data object name.

格式或语法规则指定数据对象名称的结构。

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A domain is a class or type and indicates the rules, syntax, and semantics for a piece of data (for example, it must be an integer, float, conform to a picture, and so on).

域是类或类型并表示数据的规则、语法及语义(例如，它必需是整型、浮点型、图片类型等等)。

youdao

A domain is a class or type and indicates the rules, syntax, and semantics for a piece of data (for example, it must be an integer, float, conform to a picture, and so on).

域是类或类型并表示数据的规则、语法及语义(例如，它必需是整型、浮点型、图片类型等等)。

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