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Which one of the following statements is true?下面哪项描述是正确的?:()?

（A）Master Data Management requires techniques for splitting or merging an instance of a business entity.主数据管理需要有分割与合并业务实体、实例的技术

（B）Managing reference data requires the same activities and techniques as does managing master data.参考数据与主数据管理有着相同的活动和技术

（C）Reference Data Management involves identifying the best or golden record for each domain.参考数据管理包括对每一个域标识“最好”或“黄金”记录的能力

（D）Business data stewards maintain lists of valid data values for master data instances.业务数据管理员维护着有效的主数据实例清单

（E）Master Data Management involves identifying and maintaining approved coded values主数据管理包括标识和维护已批准的码值 答案解析: 在书中P518是这样子描述的:其余答案:Business data stewards maintain lists of valid data values for master data instances.:应该是数据管理员与业务人员协作维护，而不是只由“业务数据管理员”维护Managing reference data requires the same activities and techniques as does managing master data.:还是有些不一样的，Master Data Management involves identifying and maintaining approved coded values:管理码值，应该是参考数据的事Reference Data Management involves identifying the best or golden record for each domain.:黄金记录应该是主数据的事