支持两种类型的查询：事件解决方案查询（它们只返回事件）和回答解决方案查询（它们可以返回任何非事件数据或聚合的结果）。
The two kinds of queries that are supported are: event solution queries, which return only events and the answer solution queries, which can return any non-event data or aggregated results.
元数据类型是特定内容类型与基础类型聚合的类型，提供特定于某类内容的特定属性。
Metadata types are those that specific content types aggregate with the base types to provide specific, well-known properties that are specific to a type of content.
系统为不同的数据类型提供了预定义的聚合函数。
它还定义了一个struct类，用来定义任意的数据聚合，此外，还定义了特殊的类any，它可以用来表示任何内置或导出类型，因而它也就成了动态类型化(dynamic typing)的基础。
It also defines a Struct class for defining arbitrary data aggregations, and the special class any which can be used to represent any built-in or derived type and thus is the basis of dynamic typing.
聚合数据结构级别(如图5所示)针对相同所有者链内相同类型的实例汇总。
Aggregated data structure level (Figure 5) works with summarized instances of the same type within the same owner chain.
采用这种技术必须对需要聚合的不同类型的输入数据编写不同的模板。
Using this technique, you would have to write a different recursive template for each variety of input data that you wanted to aggregate.
此类中的大部分方法只是简单描述要在BIRTAggregation Widgets下拉列表中显示的聚合的各个方面，比如数据类型、标题和描述信息。
Most of the methods in this class simply describe various aspects of the aggregation, such as data type, title, and description information, to show up in the BIRT Aggregation widget drop-down list.
Pipes是一种基于Web的工具，可以聚合能够通过 Web 访问的不同类型的数据，比如RSS提要。
Pipes is a Web-based tool for aggregating various types of Web-accessible data, such as RSS feeds.
每种聚合类型对应一种数据结构图和ER模型。
Every aggregation type corresponds to a data structure diagram and an entity relationship model.
每种聚合类型对应一种数据结构图和ER模型。
Every aggregation type corresponds to a data structure diagram and an entity relationship model.
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