At runtime, the platform will manage all database transactions, issuing SQL queries, caching and binding results to forms and API objects.

在运行时，这个平台将管理所有数据库事务，发出SQL查询，缓存结果并将结果绑定到表单和API对象。

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Look at the SPARQL spec to learn in detail about SPARQL's built-in functions, operators, query forms, and syntax, or to see many more example SPARQL queries.

请参阅SPARQL的规范，详细学习SPARQL的内置函数、操作符、查询格式和语法，或者参阅更多SPARQL查询示例。

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By now, you've seen how to write XQueries that retrieve XML document fragments, create new forms of XML output, and return different output based on conditions specified in queries themselves.

至此，您已经看到了如何编写XQuery来检索X ML文档片段，创建新格式的XML输出，以及根据查询中指定的条件返回不同的输出。

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