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Which of the following is the best example of a 'documented data quality rule'?
A. Each transaction data file holding customer transactions must be kept confidential to the authorized was within the operations team
B. The transaction data from all satellite system needs to be ready by 12:05 am in order to feed the overnight batching window, to ensure branches have access to actual customer balances
C. Every transaction recorded must be processed by 12:05 am by authorized personnel who will validate balances and data delivery to branches
D. The transaction data from all satellite systems needs to reflect actual customer balances each morning
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正确答案是:B: The transaction data from all satellite system needs to be ready by 12:05 am in order to feed the overnight batching window, to ensure branches have access to actual customer balances。

专业分析:
一个“documented data quality rule”应该明确地定义数据质量的标准和要求,确保数据在使用时是准确、完整、及时和一致的。选项B提供了一个具体的时间点(12:05 am),并明确了数据需要在这个时间点之前准备好,以便进行夜间批处理。这种规则确保了数据的及时性和一致性,是一个典型的数据质量规则。

其他选项的分析:
A: 这个选项主要关注数据的保密性,而不是数据质量规则。
C: 这个选项虽然提到了时间点和授权人员,但更侧重于操作流程,而不是具体的数据质量标准。
D: 这个选项虽然提到了数据的准确性,但缺乏具体的时间点和操作要求,不如选项B具体和可操作。

因此,选项B最符合“documented data quality rule”的定义。