在关系数据库系统内部，应用程序和实际数据库之间的主要交互都是以会话或连接的sql语句形式来实现的。
Within a relational database system, most interactions between an application and the actual database are in the form of SQL statements within a session or connection.
这种扩展的主要原因是在大型分布式应用程序的跟踪时需要提供分层次的数据表示形式。
This extended use of the execution flow notation is motivated by the need to provide a hierarchy of data representation, which is necessary for large-scale, distributed traces.
在Web应用程序环境中，迭代主要用于访存和显示数据集，通常是以列表或表中的一系列行的形式显示。
In the context of Web applications, iteration is primarily used to fetch and display collections of data, typically in the form of a list or sequence of rows in a table.
虽然可以使用这些应用程序来生成XML文件的规范形式，但是它们仍主要用于XML签名代码。
Although you can use these applications to generate the canonical form of an XML document, they are primarily used by the XML signature code.
虽然可以使用这些应用程序来生成XML文件的规范形式，但是它们仍主要用于XML签名代码。
Although you can use these applications to generate the canonical form of an XML document, they are primarily used by the XML signature code.
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