[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-04-02。"],[[["Policy tags in BigQuery are used to define access to data at the column level or when using dynamic data masking."],["Organizations should build a hierarchy of data classes relevant to their business, such as PII, financial data, or customer order history, to efficiently manage multiple columns with a few policy tags."],["Consider the various groups within your organization that require different levels of data access, such as those needing business-sensitive data versus those needing personally identifiable information (PII)."],["Policy tags can be grouped together in a tree structure, often with a root policy tag containing all others, allowing for simultaneous access grants and easy reclassification of data."],["Managing access with these policy tag hierarchies enables control over numerous columns by adjusting permissions on a small set of data classification policy tags."]]],[]]
