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- FOREIGN KEY constraints do not have to be dropped in advance. FOREIGN KEY约束不必预先删除。
- PRIMARY KEY and FOREIGN KEY constraints can be added or deleted. 可以添加或删除PRIMARY KEY约束和FOREIGN KEY约束。
- Table form a composite PRIMARY KEY constraint for this table. 列构成了针对此表的复合PRIMARY KEY约束。
- Is the name of the table referenced by the FOREIGN KEY constraint. FOREIGN KEY约束所引用的表名。
- Only one PRIMARY KEY constraint can be created for each table. 只能为每个表创建一个PRIMARY KEY约束。
- When you work with joins, PRIMARY KEY constraints relate one table to another. 当进行联接时,PRIMARY KEY约束将一个表与另一个表关联。
- A PRIMARY KEY constraint cannot be dropped if an XML index exists on the table. 如果表中存在XML索引,则不能删除PRIMARY KEY约束。
- The Unique Constraint or Foreign Key Constraint dialog box is displayed. 即显示“唯一约束”或“外键约束”对话框。
- Is a column in parentheses referenced by the new FOREIGN KEY constraint. 新FOREIGN KEY约束引用的带括号的列。
- FOREIGN KEY constraints defined as part of a table definition that enforce proper relationships between tables. 作为表定义的一部分而定义的FOREIGN KEY约束,它强制使表间具有恰当的关系。
- FOREIGN KEY constraints require that each value in the column exist in the specified column in the referenced table. FOREIGN KEY约束要求列中的每个值在所引用的表的指定列中都存在。
- Design entity keys. Considerations include FOREIGN KEY constraints, PRIMARY KEY constraints, and UNIQUE constraints. 设计实体键。考虑外键约束,主键约束和唯一性约束条件。
- Consider the cost of enforcing FOREIGN KEY constraints when you design your database and applications. 在设计数据库和应用程序时应考虑强制FOREIGN KEY约束的开销。
- Changes to PRIMARY KEY constraints are checked with FOREIGN KEY constraints in related tables. 对PRIMARY KEY约束的更改可由相关表中的FOREIGN KEY约束检查。
- Consult your database documentation for details about how your database works with foreign key constraints. 有关数据库如何使用外键约束的详细信息,请查阅数据库文档。
- For tables with existing foreign key constraints, you can easily add the related tables to the database diagram. 对于包含现有外键约束的表,可以很容易将相关表添加到数据库图表中。
- Member tables must have all PRIMARY KEY constraints on the same number of columns. 各个成员表中具有PRIMARY KEY约束的列数必须相同。
- The member tables should have all PRIMARY KEY constraints on the same number of columns. 成员表在编号相同的列上应具有所有PRIMARY KEY约束。
- The constraint '%.*ls' is being referenced by table '%.*ls', foreign key constraint '%.*ls'. 约束 ''%251!'' 正由表 ''%253!'' 的外键约束 ''%255!'' 引用。
- FOREIGN KEY constraints require that each value in the column exists in the corresponding referenced column or columns in the referenced table. FOREIGN KEY约束要求列中的每个值在所引用的表中对应的被引用列中都存在。
