这种标记语言定义并保持了一种基于XML的标准框架，用于在在线合作伙伴之间创建和交换安全信息。
This markup language defines and maintains a standard XML-based framework for creating and exchanging security information between online partners.
该样本代码提供了组成该结构的数据定义语言（Data Definition Language，DDL）和集成交换格式（Integration Exchange Format，IXF）文件。
The sample code provides the Data Definition Language (DDL) and Integration Exchange Format (IXF) files which make up the structure.
一方面，Web 服务描述语言（Web Services Description Language，WSDL）定义可以利用消息的 XML 架构描述，允许准确描述交换的消息。
On the one hand, Web Services Description Language (WSDL) definitions can leverage XML Schema descriptions of messages, allowing exact descriptions of exchanged messages.
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