FOREIGN KEY CONSTRAINTS的意思|示意
外键约束
FOREIGN KEY CONSTRAINTS的网络常见释义
约束 外键约束(Foreign Key Constraints)也被称为引用完整性约束
外键约束 ...,因为 InnoDB 的行级锁定(row level locks)适宜非常小的空间。InnoDB 是 MySQL 上第一个提供外键约束(FOREIGN KEY constraints)的表引擎。InnoDB是为处理巨大数据量时的最大性能设计。
外键 ... 唯一性约束 Unique Constraints 外键 Foreign Key Constraints 检查约束 Check Constraints ...
FOREIGN KEY CONSTRAINTS相关例句
Adding or dropping unique, distinct, or foreign key constraints.
添加或删除惟一、独特或外键约束。
The logical model for a relational database normalizes the entities and relationships into tables with foreign key constraints.
关系型数据库的逻辑模型进一步规范化这些实体和关系,并形成带有主外键约束的表。
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.
未能启用约束。一行或多行中包含违反非空、唯一或外键约束的值。
You can also use the system catalog views to retrieve information about NOT NULL, unique, primary key, foreign key, and table check constraints. For example.
也可以使用系统编目视图来检索关于NOT NULL、惟一、主键、外键和表检查约束的信息。
It is important to understand how foreign-key constraints and cascading behavior in the database are created in the generated dataset code.
您必须了解在产生的资料集程序码中,如何建立资料库中的外部索引键条件约束和串联行为。
Minimize the triggers, CHECK and foreign key constraints, and generated columns for the table.
尽量减少表上的触发器、检查和外键约束以及生成的列。