It is often necessary to map one business object (see Key landmarks — business objects) into another when coordinating heterogeneous systems, or even as part of normal business logic.
在协调异构系统时，甚至在正常业务逻辑的某个部分，常常需要将一个业务对象(请参见重要的里程碑——业务对象)映射成另一个业务对象。
To do so, click on the Add icon, and then select the database object type Foreign Key Constraint, as shown in Figure 4c.
为此，单击add图标，然后选择数据库对象类型ForeignKeyConstraint，如图4c所示。
See, even though I'm giving you two distinct Key objects, you're not returning the correct value object. It's returning value2, not value1.
看到了吗，即使我给你两个截然不同的Key对象，也不能返回正确的value对象，返回的是value2，而不是value1。
Embedded within the IOR is the type_id, IIOP version, the host address and port number, as well as an object key.
IOR中嵌入的是type_id、IIOP版本、主机地址和端口号，以及对象键。
Change to the "Certificates" TAB to view the certificate (s) of this key object.
切换到“Certificates”选项卡查看这个密钥对象的证书。
For example, client object maps are not a key component of the performance testing model.
例如，客户对象映射并不是性能测试模型的关键构件。
It introduced the key object types that are in the model, and provided some example code to show how to get started using the programming model.
还介绍了模型中的重要对象类型，并提供了一些示例代码，展示如何开始使用编程模型。
Creating a good partitioning of the software state space is a key goal of object design.
生成良好的软件状态空间的分割是对象设计的关键目标。
Each object inside a bucket has exactly one key.
bucket 中的每个对象必须有且只有一个键。
There's just one caveat: SQLObject won't let you change the primary key of an object.
这只是一个警告：SQLObject不允许更改对象的主键。
Understanding the life cycle of the object that you're adding listeners to is key.
关键是理解从中添加侦听器的对象的生命周期。
Clearly, this approach is a pain but the solution is easy: Never use a mutable object type as a key in a HashMap.
很显然，这种方法很糟糕，但是解决方法也很简单：永远不要将可变对象类型用作hashmap中的键。
The rules engine finds the object on the session or request at a key you specify.
规则引擎根据您指定的键查找会话或请求中的对象。
For that effect, JSON defines the following main data structures: number, string, Boolean (true and false), array (an ordered sequence of values), object (collection of key value pairs), and null.
为了实现该目的，JSON定义了以下主要数据结构：数字、字符串、布尔值(真或假)、数组(值的有序排列)、对象(键值对集合)和null。
To run a simple Web search, create a SearchClient object instance using the API key that you received from Yahoo when you registered.
执行简单的Web搜索需要使用注册时从Yahoo得到的API密钥创建一个SearchClient对象实例。
It sets the instance id as the key attribute of the generic customer object.
它会将实例ID设置为通用客户对象的键属性。
The majority of the Amazon storage patterns were based on primary key access leading to single value or object.
亚马逊的大多数存储模式都建基于通过主键访问某个值或对象。
One of the key responsibilities for these aspects is to follow chains of object references.
这些方面的一个关键职责是跟踪对象引用的链。
The second find method in the customer class, findAllOrder(), uses a key with the searched object type and the customer ID of this instance.
客户类中的第二个find方法是findAllOrder()，它使用了一个包含搜索到的对象类型和该实例的客户ID 的密钥。
The key on the Retweet object in Listing 3 will be a combination of the tweet id and the user who retweeted it.
清单3中Retweet对象上的键将是tweetid和转发它的用户的结合。
First, you usually want to have a (surrogate) object identifier that maps to the primary key of the corresponding database table.
首先，您通常要具有一个映射到对应数据库表主键的(代理)对象标识符。
The EJB specification states that the key must be a unique value represented by a serializable object.
EJB规范规定：主键必须是一个可序列化的对象所表示的独一无二的值。
Each object stored within an S3 bucket is identified using a unique key.
在S3bucket中存储的每个对象由一个惟一的键标识。
This is usually not a problem in practice — it is not common practice to use a mutable object like a List as a key in a HashMap.
实践过程中这通常不是问题——我们并不经常使用象List这样的可修改对象做为hashmap中的关键字。
It is generally up to the code calling the rule to make sure that the object exists on the session at the expected key.
通常，调用规则的代码需要确保会话中存在对应于预期键的对象。
In this article, I move beyond the basics in the last article and concentrate on more detail about three key parts of this request object.
在本文中，我将在上一篇文章的基础上重点介绍这个请求对象的3个关键部分的内容。
The key step in the preceding code is providing the actual object as the JSON output to the client.
以上代码的关键步骤在于将实际对象作为JSON输出提供给客户机。
A business object could be identified by more than one of its properties, which is called a composite key.
可以使用其多个属性对业务对象进行标识，这称为组合键。
You should use this kind of object when you need a convenient and efficient way to retrieve data associated with an arbitrary key.
如果您需要方便快捷的方式来检索与任意密钥相关的数据，那么您应该使用此种类型的对象。
Given the view's definition, you created a metadata object consisting of four columns and designated one column as the primary key for purposes of your work.
提供了视图定义后，可以创建由4个列组成的元数据对象，并指定一个列为主键以进行以后的工作。
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