entity integrity造句
例句与造句
- 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。 - It's difficult to find entity integrity in a sentence. 用entity integrity造句挺难的
- 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） 。
