It must be an integer while FTE stands on manpower for a certain work and could be decimals.
FTE则用来表达一定工作时间所需的员工数，不一定是整数，可以是小数。
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)。
On the other hand, if the first join column is an integer, the related join column must also be of an integer data type, but it can be a different size.
另一方面，如果第一个联结资料行为整数，则关联的联结资料行也必须为整数资料型别，但资料大小可有所不同。
On the other hand, if the first join column is an integer, the related join column must also be of an integer data type, but it can be a different size.
另一方面，如果第一个联结资料行为整数，则关联的联结资料行也必须为整数资料型别，但资料大小可有所不同。
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