occurrence set 出现集
In data base terminology, a single instance, for example, a set occurrence, a record occurrence.
在数据库术语中，一个单一实例，例如，一组具体值，一个记录的具体值。
The frequency distribution is stored in the metadata repository as a distinct set of values with their associated count of occurrence.
频率分布存储在元数据储存库中，其形式为一组不同的值和与之相关的出现次数计数。
As above, this is a count of the number of distinct values and the frequency of their occurrence but now within the context of a set of data elements.
与前面一样，这仍是不同值的数量和它们的出现频率的计数，但这一次是在一组数据元素的上下文中。
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