主键约束 PRIMARY KEY ; primary key constraint ; PK
外部键约束 foreign key constraint ; foreign key
键约束 Key Constraints
支持键和约束 Supports keys and constraints
主关键字约束 Primary Key Constraint
违反外键约束 FOREIGN KEY VIOLATION
外键约束 Foreign Key ; Foreign Key Constraint
外关键字约束 Foreign Key Constraint
主键约束名 Primary key constraint name
外键约束名 Foreign key constraint name
尽量减少表上的触发器、检查和外键约束以及生成的列。
Minimize the triggers, CHECK and foreign key constraints, and generated columns for the table.
所有DOC_ID都是惟一的，以满足外键约束。
用于为外键约束禁用索引的新语句被使用alter语句添加来使用。
New syntax for disabling an index for foreign key constraint was added to use with the ALTER statement.
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