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sdoCOCA⁸⁸⁵³¹BNC¹⁰⁴⁵⁸⁴⁺⁶ 基本例句 abbr.合成干性油=synthetic drying oilabbr.串行数据输出=Serial Data Output As a DMS always returns the information in the same formata Data Graph, it hides the actual data storage and provides a level of abstraction between the SDO application and the EIS. DMS总是以同一种格式数据图返回信息,它隐藏了实际的数据存储信息,在 SDO应用程序和 EIS之间提供了一层数据提取的功能。 ibm The Service Data Object SDO provides the technology to represent a universal model for data. 服务数据对象 SDO提供了一种用通用模型来表示数据的方法。 ibm Upon return of that data, SDO can then recognize any changes that occurred while the client was disconnected. 该数据返回时, SDO可以随即识别在客户机断开连接时所发生的任何更改。 ibm An SDO instance thus can only be contained by one container at a time. 因此一个 SDO实例在同一时刻仅能被一个容器所包含。 ibm Another important concept in the SDO architecture is the data graph, a structure that encapsulates a set of data objects. SDO体系结构中的另一个重要概念是数据图,它是封装一组数据对象的结构。 ibm Applications that follow this data access pattern are well- suited for SDO. 遵循这种数据访问模型的应用程序非常适合 SDO。 ibm As mentioned, the focus of SDO is on providing a flexible data object representation for data from heterogeneous data sources and built-in support for optimistic concurrency. 刚才已提到, SDO的重点是为异构数据源中数据提供一个灵活的数据对象表示,并为开放式并发提供内置支持。 ibm As stated previously SDO provides uniform access to data of various types, only one of which is XML. 如前所述, SDO提供了对不同类型数据的统一访问, XML仅是其中的一种数据类型。 ibm At the heart of every SDO instance is a model that defines the permitted structure of a data object. 在每个 SDO实例的中心都有一个模式,用于定义所允许的数据对象结构。 ibm Both SDO and EII offer programmers a single interface to a variety of disparate data, allowing programmers to manipulate this data through a single data structure. SDO和 EII都向编程人员提供了各种异类数据的单一接口,允许编程人员通过单一数据结构对数据进行操作。 ibm Data flows between components as business objects, an extension of service data objects SDO, which is another open specification. 数据作为业务对象服务数据对象 SDO的扩展,它是另一个开放规范在组件之间流动。 ibm For those unfamiliar with SDO or EII, we first provide a brief introduction to these technologies and explain the potential benefits of each. 对于那些不熟悉 SDO或 EII的人,我们首先对这些技术进行简要介绍,并说明它们各自的潜在优点。 ibm However, if significant manipulation is required, it is important that the technology understands the model for the document, and in that case, SDO is probably a more appropriate choice. 然而,如果需要一些重要的操作,那么让该技术了解适用于该文档的模式非常重要,在此情况下, SDO可能是更为合适的选择。 ibm However, this time we created an extra SDO record that eliminates the above problem with the default scenario. 然而这次我们创建了一个额外的 SDO记录,消除了默认场景的上述问题。 ibm In addition, SDO offers a metadata API enabling applications, tools, and frameworks to introspect the data model in a uniform way, regardless of its origin. 另外, SDO提供了支持元数据 API的应用程序、工具和框架来以统一的方式自省数据模型,而不管它的来源。 ibm Like the SDO standard, SMO is an aggregate that encapsulates data and history references. 就像 SDO标准一样, SMO是一种封装了数据与历史引用的集合体。 ibm Many programming tasks require some initialization or start-up activities, and this sample SDO application is no exception. 许多编程任务都需要一些初始化或开始活动,此示例 SDO应用程序也不例外。 ibm Moreover, SDO promotes a uniform data access for a wide variety of data sources and services. 而且,对种类繁多的数据源和业务 SDO提供了一个统一的数据访问。 ibm Not all these concepts are supported in the PHP implementation of SDO. 并不是所有这些概念在 SDO的 PHP实现中都受支持。 ibm Note that the sample application for this article utilizes only dynamic SDO, although the EMF code generator also provides full support for static code generation of data objects. 注意,本文中示例应用程序仅使用了动态 SDO,虽然 EMF代码生成器也为数据对象的静态代码生成提供了完整的支持。 ibm They provide a common programming model SDO for dealing with both types of message. 它们可提供一个公共编程模型 SDO来处理这两种类型的消息。 ibm This approach yields optimal performance but has the disadvantage of not being portable across SDO implementations. 这种方法能得到较好的性能,但缺点是不能跨 SDO实现移植。 ibm While a JDBC DMS, for instance, needs to know about the persistence technology for example, relational databases and how to configure and access it, SDO clients need not know anything about it. 比方说,虽然 JDBC DMS需要知道持久性技术比如关系数据库,以及如何配置和访问数据, SDO客户机不需要了解这些细节。 ibm SDO also provides a metadata API, which allows applications, tools, and frameworks to introspect the data model for a data graph. SDO还提供了一个元数据 API,允许应用程序、工具和框架对数据图形的数据模型进行自检。 ibm SDO applications may only work with data objects in data graphs. SDO应用程序可能只使用数据图中的数据对象。 ibm SDO components provide a common abstraction for data flow between components regardless of scope. SDO组件提供了组件间数据流的公共抽象,而与范围无关。 ibm SDO handles all its memory allocation and de-allocation internally, and does not require user code to be involved. SDO采用内部方式处理其所有内存分配和释放工作,并不要求使用用户代码。 ibm SDO provides a generic way for applications to interact with any object model and the data contained within the objects. SDO提供了应用程序与任何对象模型和该对象中包含的数据进行交互的一般方法。 ibm SDO provides, therefore, the ability to load data from a database and pass the data to a temporarily connected client. 因此, SDO提供了从数据库加载数据并将数据传递给临时连接的客户机的功能。 ibm SDO provides programmers with an object- oriented way of modeling and manipulating a variety of persistent data without having to learn the native APIs of each required data source. SDO为编程人员提供了以面向对象的方式建模和操作各种持久存储数据的方法,从而不必知道每个必需的数据源的本地 API。 ibm |