referential integrity constraints的意思|示意

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参照完整性约束


referential integrity constraints的网络常见释义

完整性约束 参照性完整性约束(Referential Integrity Constraints):即外键约束,其原理是:如果列A是表R1的外键,它与表R2的主键K相对应,则表R1中列A的每个值要么取空(NULL)值,要么等于表R2中...

referential integrity constraints相关短语

1、 Cascading Referential Integrity Constraints 级联参考完整性约束

2、 Self-Referential Integrity Constraints 自引用完整性约束

referential integrity constraints相关例句

Transfer tables, data, stored procedures, referential integrity constraints, security, and indexes.

复制表、数据、存储过程、引用完整性约束、安全性和索引。

Do not include any clauses defining declarative referential integrity constraints.

不要包括可定义声明引用完整性约束的子句。

Primary key, referential integrity, and check constraints.

主键、引用完整性和检查约束。

For more on MySQL referential integrity, please see the section on foreign keys constraints in the MySQL product documentation.

要深入了解MySQL参照完整性,请参考MySQL产品文档中关于外部关键字的部分。

Copy tables, data, stored procedures, referential integrity constraints, security, and indexes.

可以复制表、数据、存储过程、引用完整性约束、安全性和索引。

You can transfer tables, data, stored procedures, referential integrity constraints, security, and indexes.

复制表、数据、存储过程、引用完整性约束、安全性和索引。