• Identify the primary and foreign keys in your 3nf relations.

    确定3nf关系外部键。

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  • Regardless of schema (3nf or Star), the Teradata query optimizer relies on statistics to help it determine the best way to access data.

    不管哪种模式(3nfStar),Teradata查询优化器依赖统计信息帮助确定最佳数据访问路径

    youdao

  • Method According to practice, method of non-3NF, method library, independence of data, optimization of programming were induced and presented.

    方法依据实践归纳并提出3nf、方法数据独立性以及程序优化等方法。

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  • All the tables in the database are normalized to a 3rd normal Form (3nf), so we can start creating our database structure based on the above ERD.

    数据库中的所有按第三范式(3rdNormalForm, 3nf)进行了标准化所以我们可以开始创建基于前面的ERD的数据库结构

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  • Remember, these normalization guidelines are cumulative. For a database to be in 3NF, it must first fulfill all the criteria of a 2NF and 1NF database.

    记住这些规范化准则渐增如果一个数据库满足第三范式,那么必须满足第二范式第一范式的条件

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  • A new normal form for relational schemes called 3.5 normal form is defined in this paper. It is strictly stronger than simple normal form which is stronger than 3nf.

    本文包含多值相关性的关系框架定义了一种新的范式—3.5范式严格强于简单范式,简单范式又是强于第3范式。

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  • In order to meet the opening request of the data warehouse and guarantee that DQAS can run at a high speed, data warehouse adopts a structure that combines 3nf with star mode.

    为了满足数据仓库开放性要求确保DQAS高速运行,数据仓库采用第三范式星型结构结合的形式。

    youdao

  • In order to meet the opening request of the data warehouse and guarantee that DQAS can run at a high speed, data warehouse adopts a structure that combines 3nf with star mode.

    为了满足数据仓库开放性要求确保DQAS高速运行,数据仓库采用第三范式星型结构结合的形式。

    youdao

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