In Canada, a conformance strength of Populated has been adopted to fill a gap between Required and Mandatory, representing an element that must be supported with data (it cannot be empty).

在加拿大，已经采用Populated的一致性强度来填补了Required和Mandatory之间的空白，其表示必须使用数据支持的元素(其不能为空)。

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You can set the other data types to be non-mandatory by adding the nillable="true" attribute to that element in the schema.

可以通过为模式中的该元素添加nillable="true"属性来将其他数据类型设置为非必填项。

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You can set the other data types to be non-mandatory by adding the nillable="true" attribute to that element in the schema.

可以通过为模式中的该元素添加nillable="true"属性来将其他数据类型设置为非必填项。

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