External primary key: the database table primary key table and other associated domain.
外部主键：数据库表中与其他表主键关联的域。
Say your database schema contains three primary key table columns named "list_id", "ListId", and "list_value".
比方说你的数据库模式中包含三个作为主键的表列，分别命名为“list _ id ”、“ListId ”和“ list _ value ”。
Modify the foreign key side of a relationship if you want to change which columns are related to columns in the primary key table.
如果要更改与主键表中的列相关的列，可修改关系的外键侧。
The primary key table contains only one record that relates to none, one, or many records in the related table. This is the most commonly used type of relationship.
主键表的一个记录，关联到关联表中，存在，没有，或者有一个，或者多个记录。这是最重要的也是最常见的关系。
So a different solution was found if an identifying column like a primary key is found in the table.
所以，如果在表中找到一个标识列，例如主键，则可以找到一种不同的解决方案。
Also, before setting up replication in DB2, you will want to ensure that every database table has a primary key or unique index.
此外，在DB 2中创建复制之前，您会希望保证每一个数据库表都具有一个主键或惟一索引。
For foreign key creation, another table with a primary key with a compatible data type is required.
对于创建外键，则需要另外一个具有主键的表，且该主键具有兼容的数据类型。
Having the database generate values for the primary key for a table (and by extension, any foreign key values for related tables) eliminates the burden from the application from having to do so.
数据库为一个表格的主键生成值(通过扩展，为相关表生成外主键)，从而将程序从这项任务的重担中解放出来。
If you don't, you need to have some way of uniquely identifying each user in a database table (a primary key, usually an integer), a username (also unique), an E-mail address, a password, etc.
如果还没有，那么需要采用某种方式使用一个数据库表(一个主键，通常是一个整数)、一个用户名(也是惟一的)、一个电子邮件地址和密码等标识每个用户。
The latter is actually a primary key lookup against the parent table and constitutes the foreign key constraint verification.
索引扫描实际上是对父表进行主键查找，并完成外键约束验证。
An example would be retrieving and caching the next available batch of keys from a primary key sequence table.
例如，在从主键序列表中检索并缓存下一批可用的键值时。
The primary key and any unique index of the table must be a superset of the associated partitioning key.
表的主键和所有惟一索引都必须是相关分区键的超集。
A dimension table needs a generalized key as the primary key data; this becomes the foreign key in the fact table.
维度表需要作为主键数据的通用键；这将作为事实表的外键。
You can also establish a foreign key in a secondary table to link with a primary key in a primary table.
您还可以在次表中建立外键，以链接主表中的主键。
To better illustrate the improvement in cardinality estimation, drop all the existing indexes on the EMPLOYEE table except the primary key index.
为了更好地解释说明基数估计值的提高，撤销除主键索引外的所有employee表上的现有索引。
Uniqueness in the CCD table must be enforced — either by a primary key or unique index on the source table or CCD table.
ccd表中必须有惟一性约束——可以通过主键或者源表或ccd表上的惟一索引实现。
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。
The spatial table has a simple structure: a unique, integer column (objectid), one or more columns making up the primary key (copied from the source table), plus a single point-geometry column.
空间表的结构很简单：一个惟一的整数列(objectid)，组成主键的一个或多个列(从源表复制的)，以及一个点几何列。
A grid that allows the mapping of the columns in the current table to the primary key columns in the mapped table.
一个允许将当前表中的列映射到被映射表的主键列的表格。
The RentalLocation table can obtain all of its assigned vehicles through the Assigned Location primary key field in the Vehicle table.
RentalLocation表可以通过Vehicle表中的AssignedLocation主键字段获取所有它分配的车辆。
Then it updates the employee name in the employee table using the identifier field, which is the primary key for this table.
最后使用field字段(该表的主键)更新employee表中的雇员名称。
The table must match the definition of your attributes; for example, the primary database key for the equations table must be the primary key of the Persistent class as well.
表必需与属性定义匹配，例如，等式表的主数据库键必须也是 Persistent类的主键。
The key is in fact the primary key of the table that to which it refers.
实际上关键是表的主键的指向。
The Location table contains a foreign key (region_id) that corresponds to primary key of the region table.
location表包含一个外键(region_id)对应region表的主键。
Simply running it twice will produce an error, because the same star names (which are the primary key for the table) are used again, causing an error with duplicate primary key values.
简单地运行两次会产生错误，因为相同的星星名称（作为表的主键）使用了两次，则会由于重复的主键值导致错误。
This method takes three parameters, the primary key, the action performed on the table (create, update, delete) and a result set.
此方法具有三个参数，主键、对表执行的操作(创建、更新、删除)和结果集。
Inter-table relationships, primary key columns, and other information about the target data is specified through the metadata object as well.
表间关系、主键列和其他有关目标数据的信息也是通过元数据对象指定的。
This clause is not allowed if the column is specified in the primary key, or in a unique constraint of the table (SQLSTATE 42831).
如果表的主键或惟一性约束中指定了这个列，那么不允许使用这个子句(SQLSTATE 42831)。
If a primary key is specified in the CREATE TABLE statement, the first column of the primary key is used as the distribution key.
如果在CREATEtable语句中指定了一个主键，那么主键的首列会被用作分配键。
If a primary key is specified in the CREATE TABLE statement, the first column of the primary key is used as the distribution key.
如果在CREATEtable语句中指定了一个主键，那么主键的首列会被用作分配键。
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