XISCAN (xml索引扫描)。
Provide an XML index for an XML column.
为xml列提供xml索引。
Thus, each XML index requires a target type.
因此，每个xml索引需要一个目标类型。
An XISCAN plan using the specified XML index.
一个使用指定的xml索引的XISCAN计划。
Thus, each XML index requires you to specify a target type.
因此，要求为每个xml索引指定一个目标类型。
Shows that this is an XML index.
显示此索引为xml索引。
Delete an XML index when it is no longer needed.
不再需要xml索引时可将其删除。
The XML index contains at least all XML nodes that satisfy the predicate.
xml索引至少包含了满足谓词的所有xml节点。
The first XML index created on the column will be the basis of the others.
基于该列创建的第一个XML索引将成为后续索引的基础。
Selected XML Index list and set properties for the index in the grid to the right.
“选定的XML索引”列表中选择新索引，然后在右侧的网格中设置该索引的属性。
The first statement defines the relational index, and the second defines the XML index.
第一个语句定义关系索引，第二个语句定义xml索引。
And a data structure of XML index table was designed to reduce the search space greatly.
设计了一种XML索引表数据结构，使得检索空间大幅缩减。
When the index name is not specified, optimizer picks the cheapest single XML index access plan.
如果未指定索引名，优化器将选用成本最低的XML 索引访问计划。
If specified, it requests an access plan using an XISCAN operator over this particular XML index.
如果指定了索引名的话，它将对特定的xml索引使用XISCAN操作符来请求一个访问计划。
Then, you can define one XML index on the non-leaf element "phone" and one on the element "areacode".
然后，可以在非末端元素“phone”和元素“areacode”上分别定义一个xml索引。
The example guideline in Listing 21 specifies that the XML index SEC_NAME be used to access the 'SECURITY' table.
清单21中的示例准则指定将使用xml索引sec_name访问“SECURITY”表。
Index creation wizards in other tools aren't yet able to handle the definition of the XPath for XML index creation.
其他工具中的索引创建向导还不能为xml索引创建处理XPath定义。
Each XML column can have more than one XML index, but the first one created (primary) will be the basis of the others.
每个xml列均可以有多个xml索引，但是创建的第一个索引(主索引)将成为其他索引的基础。
To summarize the advice for XML join queries, always cast join predicates to the type of the XML index that should be used.
总结一下关于XML连接查询的建议，通常将连接谓词转换为应使用的xml索引类型。
With DB2 9.7, XML index creation allows concurrent write operations by default, just like the creation of relational indexes.
在DB 2 9.7中，与创建关系索引一样，xml索引创建操作在默认情况下允许并发的写操作。
Each XML column can have more than one XML Index, but the first one created (primary) will be the basis of the others (secondary).
每个xml列都可以有多个xml索引，但最先创建的索引(主索引)将成为其他索引(二级索引)的基础。
New optimization technology in DB2 9.7 enables DB2 to automatically use the XML index officeIdx defined on the underlying XML column to process this query.
DB 2 9.7中新的优化技术让DB2能够自动地使用底层xml列上定义的xml索引officeidx来处理这个查询。
The guideline specifies that table SECURITY should be the outer table in the join and the XML index SEC_INDUSTRY should be used to access the SECURITY table.
该准则指定应当将表SECURITY 作为连接中的外表，而XML索引 SEC_INDUSTRY 应当被用于访问 SECURITY 表。
If you delete the primary XML index, you will be notified that this will delete all secondary ones as well, and you can either continue or cancel the action.
如果删除主要xml索引，您会接获通知表示这个动作将同时删除所有的次要索引；您可以选择继续或取消动作。
The guideline also specifies that the table CUSTACC should be the inner table of the join and the XML index ACC_CURRENCY should be used to access the CUSTACC table.
准则还指定应当将表CUSTACC作为连接的内表，而xml索引acc_currency应当用于访问custacc表。
In temporal XML index areas, most of them generate a new version when updating temporal XML document and need to traverse different versions to complete query processing.
在时态XML索引领域，较多是在时态xml文档更新时产生一个新版本，需要遍历不同的版本才能完成查询处理，影响查询处理性能。
Efficient index is the key to improve efficiency of XML query. A large number of XML index algorithms have been proposed, however, most of them didn't support data updating.
高效的索引是提高XML数据查询效率的关键，目前已经提出了许多XML索引算法，它们大多数都不支持XML数据更新。
New enhancements in DB2 lift this restriction, allowing for greater flexibility and avoiding application delay or downtime when an XML index needs to be created or reorganized.
DB 2中新的改进消除了这一限制，这可以显著提高灵活性，避免在需要创建和重组xml索引时出现应用程序延迟或停止运行。
As you see in Table 3, a string predicate can only be evaluated with an XML index of type VARCHAR, while a numeric predicate can only be evaluated with an index of type DOUBLE.
正如您在表3中所看到的，字符串谓词只能由varchar类型的xml索引进行计算，而数值谓词只能由double类型的索引进行计算。
In order to solve these problems, this paper proposes a transformation algorithm of abstract information based on the semantic path, in the light of constructed XML index tree.
针对现有的XML签名对特定细粒度信息查找困难和签名速度慢的问题，提出一种基于语义路径提取信息的变换算法，此语义路径通过构建XML索引结构得到。
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