Databases like keys, so add a record key to each address_rec component, as in Listing 4.
数据库喜欢使用键，因此，添加一个记录键到每个address_rec组件，如清单4所示。
The next step is to write a sample COBOL CICS program to read a record from VSAM dataset based on a record key.
下一步是编写一个COBOLCICS程序，以便基于记录键(record key)从VSAM数据集中读取一个记录。
Most often this feature is ignored, and password text boxes simply record key-press events and ignore key-release events.
这项功能经常被忽略，并且密码文本框只记录按键事件而忽略释放事件。
This program accepts an operation code and a record key as inputs, then reads the VSAM dataset and returns the record back to CICS.
这个程序接受一个操作码和一个记录键作为输入，然后读取VSAM数据集并将记录返回给CICS。
One of its columns contains a generated key that uniquely identifies each record.
其中一列包含所生成的，唯一标识每个记录的关键字。
A primary key is a special thing in the relational model: It must be unique to each record (row) of a table.
在关系模型中主键是特殊的事物：它对于表的每个记录(行)必须是唯一的。
Below is a very simple configuration log — the format is not important as long as you record a few key data points each time.
下面是一个非常简单的配置日志——格式不是很重要，只要您每次记录一些关键数据点即可。
When external keys are in use (ei columns stored in their own table), we are able to find the orphaned record in the external key table and turn it into a deletion stub.
当使用外键时(ei列被存储在它们自己的表中)，可以在外键表中找到孤立的记录并将其转化为删除存根。
Transaction: Provides the operational source (system of record) with central authoring for all key master data — and the master data is consistent, accurate and complete at all times.
事务：为所有关键主控数据提供集中创作的操作源(记录系统)——而且主控数据始终保持一致、准确和完整。
Each record saved in the datastore, also called an entity, requires a primary key.
保存在数据存储中的每一条记录，即实体，都需要有一个主键。
For example, flat files should have a trailer record telling the total of records in the file and an aggregate of the key fields.
例如，普通文件应该有一条尾记录，说明文件中的总记录数，以及关键字段的合计。
The foreign key has not only an identifier to identify a record, but also a type to identify the table.
外键不仅具有标识记录的标识符，而且还具有标识表的一个类型。
The key here is that the ordering system is implemented to accept a single record, whereas the input into the mediation module is a nested batch message.
这里的关键是将订单系统实现为接收单个记录，而到中介模块的输入是嵌套式批处理消息。
However, in many cases, an entity of importance is a subset of a record, or spans several tables and requires data to be joined through a common key.
但是，在很多情况下，重要的实体是一个记录的一个子集，或者跨多个表，需要通过公共键链接数据。
Every record in the table has a unique ID called the primary key.
表中的每个记录都有一个惟一的ID，称为主键。
Then when a value is set, the key is removed from the database and a new record is added with the updated value.
在设置一个值后，键就从数据库中移除掉，并添加一条具有更新过的值的新记录。
When ON delete set NULL is active, when a record is deleted from the parent table, all records in the child table with matching foreign key values are set to NULL.
当ON DELETESETNULL规则被激活时，如果一条记录从父表中删除，子表中的所有记录以及匹配的外键值都被设置为NULL。
ON DELETE CASCADE—When a record is deleted from the parent table, all records in the child table with matching foreign key values are also deleted.
ON DELETECASCADE —当一条记录从父表中删除时，子表中的所有记录以及匹配的外键值都全部被删除。
When an ON delete CASCADE rule is active, all records in the child table with matching foreign key values are deleted when a record is deleted from the parent table.
当ONDELETECASCADE规则被激活时，当一条记录从父表中删除时，子表中的所有记录以及匹配的外键值都被删除。
The generated key uniquely identifying each record.
所生成的，唯一标识每个记录的关键字。
This URI typically needs a key record value within the table, something like an ID column.
该URI通常需要表中一个键记录值，比如id列。
Specify the record length as 80 and the key length as 5.
指定记录长度为80，键长度为5。
In this sample, it is assumed that every contact record has a unique E-mail address that is used as the "Key" column.
在这个示例中，假设每个联系方式记录都有一个惟一的e - mail地址，作为“Key”列。
A: Local indexes do not store the 2-byte partition identifier in the rowid of each key record.
A：本地索引不在每个键记录的rowid中存储2字节分区标识符。
One year ago we reported that music-based social networking site Imeem was experiencing strong growth and making key deals with record labels.
一年前我们曾报道过，基于音乐的社交站点Imeem涨势迅猛，并于唱片品牌达成了重要合作协议。
So this begins with the data in the people variable; it then moves to the item called programmers and pulls off the first record ([0]); finally, it accesses the value for the lastName key.
所以，这行代码首先访问people变量中的数据；然后移动到称为programmers的条目，再移动到第一个记录([0])；最后，访问lastName键的值。
So this begins with the data in the people variable; it then moves to the item called programmers and pulls off the first record ([0]); finally, it accesses the value for the lastName key.
所以，这行代码首先访问people变量中的数据；然后移动到称为programmers的条目，再移动到第一个记录([0])；最后，访问lastName键的值。
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