查询词典 primary key
- 与 primary key 相关的网络例句 [注:此内容来源于网络,仅供参考]
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What is the function of primary key in database?
数据库中的主关键字的作用?
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It should be noted that every record in a relational database has its own primary key.
应该指出,每一个记录,在一个关系数据库都有自己的首要关键。
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A PRIMARY KEY is used to uniquely identify each record within a database table.
主键是用于唯一地标识在数据库表中每条记录。
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Primary Key: Unique watchdog event ID.
主键: 唯一的看门狗事件识别码。
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Primary key: Grogshop management、access、database.
要害字 :酒店管理、访问、数据库。
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Although a unique index will help locate information, using a primary key or unique constraint will give you the best performance.
尽管唯一的索引可用来定位信息,但使用主键或唯一约束可为您提供最佳的性能。
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This can be accomplished through a combination of the table name, primary key, and column name.
这些可以通过表名,主键和列名的合作来完成。
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No component of a primary key can have a null value.
没有一个主键部分具有一个空值。
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Number which is the primary key of the value in the secondary table.
有多少是在第二表中的值的主键。
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The retrieval of a data record in an indexed file by the primary key within the data record
在索引文件中,通过数据记录中的主要关键字或可选关键字进行数据记录的检索的一种方法。
- 推荐网络例句
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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
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But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。