事实表可以根据一或多个外键过滤。
The fact tables can be filtered on one or more of their foreign keys.
为简单起见，该图不含显式的外键。
For the sake of simplicity, it contains no explicit foreign keys.
显示与一个表相关联的所有外键。
创建一个索引禁用的外键约束。
您无需担心处理主键或外键的麻烦。
You don't need to worry about messing around with the primary key or foreign key.
创建了表、主键、外键，和索引。
Created the tables, primary keys, foreign keys, and indexes.
对于所有主键和外键的规范。
我们还知道如何在模式文件中表示外键。
We've also seen how foreign keys are represented in the Schema files.
因此为了简化起见，本文没有使用外键。
So to make things simpler for this article, no foreign keys are used.
将关系映射到数据库外键。
下面的代码将添加上图中的所有外键链接。
This next section of code adds all of the foreign key links seen in the previous diagram.
为基于主键、外键和索引的通用查询提供访问
Provides access to common queries based on primary keys, foreign keys, and indexes.
关系数据库中的关系是通过使用外键来维护的。
Relationships in relational databases are maintained through the use of foreign keys.
这样使得在关系数据库模型中导入外键更方便。
This makes importing foreign keys easier in relational database models.
一对一关系和一对多关系使用一个外键来实现。
One-to-one relationships and one-to-many relationships are implemented using a foreign key.
主键列、外键列和索引上使用的列的数据类型。
Data type of primary key columns, foreign key columns, and columns used on indexes.
keys视图—允许定义主键、惟一键和外键。
Keys view a "Allows defining primary keys, unique keys, and foreign keys."
索引下推使用下推键执行事实表外键索引的查询。
An index pushdown USES the pushed-down keys to perform index lookups on a foreign key index of the fact table.
约束支持主键、外键、惟一和非空约束。
Constraints Supports, primary, foreign, unique, not null constraint.
您还可以在次表中建立外键，以链接主表中的主键。
You can also establish a foreign key in a secondary table to link with a primary key in a primary table.
它基本上能用于MySQL，但不能提取外键关系。
It works at a basic level with MySQL, but it won't pick up foreign key relationships.
这不会影响到成员数据库中表格之间的主-外键关系。
This will not affect the referential integrity or primary-foreign key relationships between the tables in the membership database.
外键未定义索引。
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.
SQLObject允许将表之间的关系定义为外键。
SQLObject lets you define relationships among tables as foreign keys.
理解这些外键的定义是理解ejb关系映射的关键。
Understanding these foreign-key definitions is key to understanding the mapping of EJB relationships.
例如，日期表的外键对于一个文档的每个关键词不会重复。
For example, the foreign key to the date table is not repeated for every keyword of a document.
星型模式要求生成并适当使用事实表和维表的主键或外键。
The star schemas require the generation and proper use of primary or foreign keys for the fact and dimension tables.
一个一对一关联被映射到表中的一个外键(无所谓哪个)？
A one-to-one association is mapped to a foreign key buried in one of the tables (no matter which)?
了解关系数据库、数据模型、惟一键、主键、外键和表联结。
Learn about relational databases, data models, unique keys, primary keys, foreign keys, and table joins.
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