Rails USES the primary key column id for various recordkeeping and referencing tasks.

Rails使用主键列id来完成各种记录保持和引用任务。

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Recordkeeping: The operator has to record the processing, handling and storage of all products for NOP certification.

记录：操作者必须记录所有NOP认证产品的加工、处理和仓储过程。

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Agriculture required expertise and detailed recordkeeping, two elements that led directly to the invention of writing, historians say.

生活也变得渐渐复杂起来，农业要求更好的技术和记录手段。 历史学家认为，这些条件创造了书面文字。

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With a little planning and some recordkeeping, people can easily double their non-cash charitable deductions.

FORBES: The Three Tax Breaks You're Likely to Miss

The state of recordkeeping in most schools is corporate America minus easily five to ten years.

FORBES: Instant feedback in the classroom

And taxpayers would still have to meet all the recordkeeping requirements in either the tax code or IRSregulations.

FORBES: Better buy yourself another filing cabinet