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entity integrity中文是什么意思

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用"entity integrity"造句"entity integrity"怎么读"entity integrity" in a sentence

中文翻译手机手机版

  • 实体完整性

例句与用法

  • Corrected the description of entity integrity
    更正了实体完整性的说明。
  • Entity integrity defines a row as a unique entity for a particular table
    实体完整性将行定义为特定表的唯一实体。
  • Is a constraint that enforces entity integrity for a specified column through a unique index
    一个约束,该约束通过唯一索引来强制指定列的实体完整性。
  • Is a constraint that provides entity integrity for a specified column or columns by using a unique index
    通过唯一索引为指定的一列或多列提供实体完整性的约束。
  • Is a constraint that enforces entity integrity for a specified column or columns by using a unique index
    通过唯一索引对指定的一列或多列强制实体完整性的约束。
  • This column , or columns , is called the primary key of the table and enforces the entity integrity of the table
    这样的一列或多列称为表的主键( pk ) ,用于强制表的实体完整性。
  • Unique is a constraint that provides entity integrity for a specified column or columns through a unique index
    一个约束,该约束通过唯一索引为一个或多个指定列提供实体完整性。
  • Entity integrity enforces the integrity of the identifier columns or the primary key of a table , through unique indexes , unique constraints or primary key constraints
    实体完整性通过unique索引、 unique约束或primary key约束,强制表的标识符列或主键的完整性。
  • Entity integrity constraints , referential integrity constraints , and user - defined most intergrity constraints of relational database were all preserved after the conversion
    转换过程可保留关系数据库的实体完整性约束、参照完整性约束和绝大部分的用户自定义完整性约束。
  • Might indicate a system - level problem cannot make a connection to the database , a logical problem no more rows in the result set , or a problem with the specific data the primary key for the row you just tried to insert already exists or violates an entity integrity constraint
    可能指示一个系统级问题(不能连接到数据库) 、逻辑问题(在结果集中没有更多的行)或者特定数据的问题(您刚才试图插入行的主键已经存在或者违反实体完整性约束) 。
用"entity integrity"造句  

百科解释

In the relational data model, entity integrity is one of the three inherent integrity rules. Entity integrity is an integrity rule which states that every table must have a primary key and that the column or columns chosen to be the primary key should be unique and not null.
详细百科解释
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