abbr.exchange scan 交换扫描(代号)
网络 系统与硬件信息查看工具; 的简单使用; 扫描
For each document, the XSCAN subsequently extracts the "authors" element.
随后对于每一个文档,XSCAN将提取“authors”元素。
For each row fetched, the XSCAN operator processes the corresponding XML document.
对于所获取的每一行,XSCAN操作符将处理相应的XML文档。
To execute XML queries, DB2 9 introduces three new internal query operators called XSCAN, XISCAN, and XANDOR.
为了执行XML查询,DB 2 9引入了三个新的内部查询操作符,名为XSCAN、XISCAN和XANDOR。
XSCAN is not an "XML table scan" but it can appear in an execution plan after a table scan to process each of the documents.
XSCAN 不是 “XML 表扫描”,但在表扫描之后,它可以出现在执行计划中,用来处理每个文档。
As such, the NLJOIN does not act as a classical join with two input legs, but facilitates access to the XML data for the XSCAN operator.
同样地,NLJOIN并没有充当拥有两个输入的标准连接,而是协助XSCAN操作符来访问XML数据。