Further, it assumes that any individual entity has some enterprise-unique identifier that's part of the record, such as a customer number or SKU.

此外，它还假定任何单独的实体都具有某个企业唯一的标识符，该标识符(例如，客户的编号或者sku)是记录的一部分。

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Any individual entity has some enterprise-unique identifier that's part of the record (for example, a customer number or SKU).

任何单独的实体都有某个企业唯一的标识符，该标识符(例如，客户编号或者sku)是记录的一部分。

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The number of items in stock for any individual part is an important piece of data that continually changes, so the application should always reflect the current values in the database if possible.

库存中任何个别零件的项目数目是不断变化的重要资料，所以，应用程式必须尽可能反映资料库中的目前值。

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