是可选元素。
Optional elements can be omitted or required.
可以忽略或要求可选的元素。
Several other optional elements of items can be used.
项还有其他一些可选的元素。
Weak wildcards - permits wildcards adjacent to optional elements.
弱通配符(Weak Wildcard)——允许通配符紧接在可选元素之后。
Use XML Schema to model the required and optional elements of your transaction.
用XMLSchema为您的事务中必需的和可选的元素建模。
RSS 2.0 has many optional elements, including those that are needed for most channels.
RSS 2.0有许多可选元素，包括多数频道都需要的那些元素。
Consequently, the canonical schema format allows these and optional elements to be specified.
因此，规范schema格式允许指定这些以及可选的元素。
Even when XML includes optional elements, it's still possible to avoid the need for null values.
即使XML包含了可选因素，仍然可以避免使用null值。
An array of the optional elements reserved to accommodate elements that may be needed by extensions.
可选元素数组保留用于放置扩展可能需要的元素。
For example, are there any optional elements or attributes that were omitted from the sample document?
例如，样本文档中遗漏了什么可选元素或属性没有？
If the package is serialized to XML, it will contain the optional elements that were recorded on load, as shown in Figure 5.
如果这个包被序列化为xml，它将包含在加载时记录的可选的元素，如图5所示。
Software repositories are optional elements and aren't shown in Figure 1; they provide a means for deploying the Web 2.0 tools.
软件存储库是一些可选的元素，图1中并没有显示它们；它们提供了一种部署Web 2.0 工具的方式。
The Atom feed information includes a few mandatory elements as well as recommended and optional elements. The mandatory feed elements include.
Atom提要信息包括一些强制元素以及一些建议的可选元素。
Service design - where policies must require to define service scope and boundaries as well as identify the set of mandatory and optional elements of.
服务设计——这里的政策一定要求定义服务范围，边界以及标识服务描述和服务契约的必备元素和可选元素。
The schema provides information on all the possible tags, attribute values, and the structure of the XML document, including optional elements and attributes.
这个模式提供了关于所有可能的标签、属性值和XML文档结构(可能的元素和属性)的信息。
Changing an element's optionality from optional to required is related to refinement for those optional elements that are not instantiated on the original document.
将元素从可选变为必须涉及到旧文档中没有实例化的可选元素的精化。
Before turning on the event monitor, you can set up the profiler to include optional event monitor elements by choosing optional elements. These optional elements include.
打开事件监视器之前，您可以设置概要分析器(profiler)，通过选择可选元素来包含可选的事件监视器元素。
According to Hasan's generic structure potential theory, a generic structure is constituted of the obligatory elements, the optional elements, their recursive elements and their sequence.
根据哈桑的语类结构潜势理论，语类结构由必选成分和可选成分及其重复成分和顺序组成。
In this process, some of the variables are primary elements that are necessary for input, while others are optional.
在这一过程中，一些变量是基本的元素，是必须输入的，而其它一些却是可选的。
All elements of the ITEM element are optional, however, at least one title or description are needed to validate the element.
ITEM元素的全部元素都是可选的，然而，至少需要一个标题或描述来验证元素。
This is the problem of representing optional XML elements in relational databases.
这个问题就是在关系数据库中表示可选x ml元素。
You can specify whether prime words, class words, and modifiers are optional, and the order in which these elements should occur.
可以指定基本单词、类单词和修饰词是否是可选的，以及这些元素出现的次序。
You can specify whether prime words, class words, and modifiers are mandatory or optional, and the order in which these elements should occur.
可以指定基本单词、类单词和修饰词是必需的还是可选的，以及这些元素出现的次序。
Fortunately, XML is well suited to upward changes, which can include the addition of (optional) new attributes and child elements.
所幸的是，XML非常适合上述变化，可以包含附加的(可选的)新属性和新子元素。
The schema for would have all account and product elements optional for all messages.
的模式中必须包含全部的帐目和产品元素，以供所有的消息选择使用。
So, how should you approach the problem of optional XML elements?
那么，应该如何解决可选XML元素的问题？
All elements are optional, but an item must contain either a or a.
所有的元素都是可选的，但是一个项至少要么包含一个，要么包含一个。
Also, using wildcards in conjunction with optional or repeatable elements can cause ambiguities and non-deterministic conditions.
另外，联合使用通配符和可选或可重复的元素可能会导致歧义和无法判断的情况。
As you'll see, the solution adopted for modeling optional XML elements has far-reaching consequences.
您将看到，针对可选xml元素建模而采用的解决方案将产生深远的影响。
While this stereotype is most definitely optional, it may help you identify elements of a model — that are not services themselves — as clients of services.
当这个原型是明确的最优的时，它可能帮你识别模型的元素——这不是服务本身——作为服务的客户。
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