An IBM Cognos environment can include multiple instances of the index update service.
IBMCognos环境包括索引更新服务的多个实例。
It is recommend to create multiple Index Update Tasks for related packages and folders.
我们建议为相关包和文件夹创建多个Index Update Tasks。
Create a new Index Update Task, include the packages that you wish to collect all data for.
创建新的Index UpdateTask，包括您希望为其收集所有数据的数据包。
As index updates add and delete entries only one index update Task should be executed at a time.
因为索引更新添加和删除条目，所以一次只应执行一个Index UpdateTask。
When creating an index Update Task, it is possible to add a list of folders to exclude from the index.
在创建Index UpdateTask时，添加一系列文件夹以便从索引中排除它们是有可能的。
The index can be restored back to it's original location as long as there is no currently executing index Update Task.
只要当前不执行Index UpdateTask，索引就可以恢复到其原来的位置。
Each IBM Cognos environment can have multiple index data services, multiple index update services, and multiple index files.
每一个IBMCognos环境都可以有多个索引数据服务、多个索引更新服务和多个索引文件。
The task of synchronizing the text index is called index update and typically follows right after you have created a text index.
对文本索引进行同步的任务称为索引更新，通常在创建文本索引之后立即执行。
If you have only one running instance of the Index Update Service, then multiple tasks will queue until the executing task completes.
如果您只有一个Index UpdateService的运行实例，那么多个任务将会排队等待，直到执行任务完成。
An automatic index update can be specified as an index attribute during the index creation or specified later using an alter index command.
自动索引更新可以在创建索引时用索引属性指定，也可以以后使用alterindex命令指定。
Based on the expectations of your users you will wish to schedule your index update Task to incrementally update the contents of the index.
基于用户的期望，您将希望安排Index UpdateTask以便增加更新索引内容。
Create a new Index Update Task, include folders that contain reports, queries or analyses that you wish to collect referenced data for.
创建新的Index UpdateTask，包括文件夹，这些文件夹包含了您希望为其收集引用数据的报表、查询或分析。
A schedule should be created for each Index update Task that meets both the business requirements as well as how often the data is updated.
为每一个满足业务需求以及数据更新频率的Index UpdateTask创建一个时间表。
During index update processing, the lexical analysis identifies the lemmas of the words in the document, and the analysis adds this information to the text index.
在索引更新过程中，词法分析确定文档中单词的词元。
The experimental results prove that it can make a proper log region allocation, efficiently improve search performance, and reduce non-clustered index update cost.
实验证明，该方法能够自适应地划分合理的日志区空间，有效提高查询性能，减少各种非聚集索引的更新代价。
The total number of high-affinity connections that are available for indexing must be equal to the number of CPUs that are available on the servers that host the index update service.
可用于索引的高亲和性连接的数量必须等于在托管索引更新服务的服务器上可用的CPU数量。
Return to the initial Index Update task that you created and schedule the task to run at your desired interval (refer to "schedule Management" in the Administration and Security Guide).
返回到您所创建的初始index UpdateTask，并在您想要的时间间隔上安排该任务运行(请参见管理和安全性指南中的“进度管理”)。
This is an asynchronous process that extracts the text information from the archived objects to update the full-text index.
这是一个异步过程，其作用是从被归档对象中提取文本信息来更新全文本索引。
Your data and the text index need to be explicitly synchronized if no update frequency is specified.
如果没有指定更新频率，那么需要显式地对数据和文本索引进行同步。
It provides methods to add, delete, or update documents in the index.
它提供在索引中添加、删除和更新文档的方法。
The index writer however, is thread safe, so you can update the index while people are searching it.
而索引写者是线程级安全的，所以你能在人们搜索它时更新索引。
This means that you should either load your data prior to creating your index or update the statistics on your table after your data is loaded.
这意味着您应该在创建索引之前加载数据，或者在加载数据之后更新表的统计信息。
When they're found, update the value array with the corresponding index.
找到这些字段之后，用对应的索引更新值数组。
Key generator function to construct index key during INSERT and UPDATE operations.
用于在INSERT和UPDATE操作中构造索引键的键生成器函数。
Manually creating an index is not recommended because the history table is frequently updated and the index could hurt update performance.
并不推荐您手动创建一个索引，因为历史表格会频繁更新，而索引可能会损害更新的性能。
The update index process can either be done manually using the command shown in Listing 5 or automatically scheduled using a background daemon.
索引更新过程可以使用清单5中的命令手工执行，也可以使用后台守护进程自动执行。
The update processing will determine which objects are new or changed on the system and index the text data for those objects.
更新处理过程会确定系统上的哪些对象是新添加的对象或是已经被修改了，然后索引那些对象的文本数据。
An incremental update of the index will take less time and resources than the creation of the initial index.
索引的增量更新将比初始索引创建需要的时间和资源更少。
A view has its index already created when a feed update is requested, so there should not be much impact.
请求提要更新时，视图已经创建其索引，所以影响不大。
Update the catalog statistics with the runstats command so that the optimizer can take this newly created index into account.
用runstats命令更新目录统计数据，以便优化器可以考虑这个新创建的索引。
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