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Leetfs committed Sep 13, 2024
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- 规范化的 `二维表`,也称为 ``
- **关系就是二维表**
- 一行为一个 `元组`
- 一列为一个 `属性`
- 唯一确定一个元组,且属性组不含多余的属性,为 `候选码`
- 属性的取值范围称为 ``
- 行和列的交叉为 `分量`

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