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。

youdao

A principal is a unique entity such as the name of an individual or group, an account number, a social security number, or similar unique identifier.

principal是一个惟一的实体，比如个人或者组的名字、帐号、社会安全号或者类似的惟一标识。

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