设计数据库引擎是为了基于指定关键字段构建表中记录的索引。
Database engines are designed to build indexes of the records in tables based on the designated key fields.
当不使用关键字段而构建记录清单时，计算机的处理速度会大大降低。
Computers can slow down greatly when they're building a list of records apart from using the key fields.
存储过程会输出之前在解释表中填充的explain实例的关键字段。
The stored procedures output the key fields for the explain instance that was populated in the explain tables.
绝大部分搜索都是在搜索关键字段吗？还是大量的搜索都不包含这些关键字段？
Will the majority of searches be for key fields, or is it possible that a large number of them will not involve key fields?
您还将告诉Domino哪些字段是非关键字段，以及它们所映射的db2列。
You will also tell Domino the non-key fields and what DB2 columns they map to.
例如，普通文件应该有一条尾记录，说明文件中的总记录数，以及关键字段的合计。
For example, flat files should have a trailer record telling the total of records in the file and an aggregate of the key fields.
记得您是如何将EMPNO字段指定为关键字段的(在DataGrid配置对话框中)。
Remember how you specified the EMPNO field to be the key field (in the DataGrid configuration dialog).
为了构建DeleteCommand的WHERE部分，您需要获取当前行的关键字段值。
In order to build the WHERE part of the DeleteCommand, you need to obtain the value of the key field for the current row.
在本例中，PRODUCTNLS持有对语言敏感的元素，并使用一个语言id作为关键字段。
In this example, the PRODUCTNLS table holds the language-sensitive elements and has a language id as key field.
这些与应用程序相关的表条目与系统级指标不同，因为它们是动态的，并基于这些表的关键字段。
These application-related table entries differ from system-level metrics in that they are dynamic and are based on the key fields of these tables.
它们在一个把Notes文档链接到外部数据的本地Notes文档中存储了至少一个关键字段。
They store at least one key field in a native Notes document that links the Notes document to the external data.
在许多例子中，这些索引是自动生成的，且极大地提升了查找的速度，即基于指定关键字段提供查找。
These indexes are automatically generated in many cases and speed lookups greatly — provided the lookups are based on designated key fields.
在该表单中，我们可以告诉Domino哪个字段是关键字段，以及如何将该字段映射到DB 2键列。
In this form, we can tell Domino which field is the key field and how this field maps to the DB2 key column.
注意：Notes/Domino只会导入关键字段COMPNO，并将之保存到NSF文件中。
Note: Notes/Domino will only import the key field, COMPNO and save it into the NSF file.
用于标识工作记录的where子句中使用的参数必须与DataKeyNames属性匹配，后者是显示记录的关键字段。
The parameter used in the WHERE clause to identify the working record must match the DataKeyNames property, which is the key field for the displayed records.
而且，由于他们的记录拷贝包含所有字段(而不只是关键字段)，所以他们的NSF文件可能要比服务器上的对应文件大许多。
Also, because their copies of the records contain all the fields (not just the key fields) the NSF file may be considerably larger than the one on the server.
这或者需要关系表中的一个额外字段来存储Notes头部信息，或者需要一个与具有关键字段的数据表相关的单独的表。
This requires either extra fields in the relational table to store Notes header information or a separate table that’s related to the data table with key fields. .
这些关键字段可作为现有解释格式化工具的输入，例如db2exfmt，它会从解释表提取信息，然后用一种格式化输出显示。
These key fields can be used as input to existing explain formatting tools, for example db2exfmt, which extract the information from the explain tables and present it in a formatted output.
在(图21的)Box1中，您需要选择Company .nsf应用程序中的关键字段，并将之映射到DB 2中的键列。
In the Box 1 (of Figure 21), you will need to select the key field in Company.nsf application and map it to the key column in DB2.
所有文档字段(语言、文档类型、源等)和facet数据都被放到映射图中。映射图的关键字为字符串，以“ field. ”。
All document fields (language, document type, source, etc.) and facet data are put into the map.
在关键字字段中输入一个或多个关键字。
扩展此应用程序的一种方式是添加一个关键字或地址字段，而二者均能让您进一步精炼搜索。
One way to extend this application is to add a keyword or location field, for example, either of which would allow you to further refine searches.
每一个索引文档也具有多值字段unid，其中包含与为该索引文档分配的关键字相匹配的源数据库中的所有文档的UNID。
Each index document also has multi-value field UNIDs, which contain the UNIDs of all documents in the source database that match the keyword assigned for that index document.
每一个源文档的关键字持有者文档的数目与每个文档的搜索字段的数目相同。
The number of keyword holder documents per source document is the same as the number of search fields in each document.
该类的方法将管理（关键字，值）对和多值字段。
The methods of this class manage (key, value) pairs and multivalue fields.
如果关键字是来自富文本字段中的搜索，这实际上是您唯一的选择。
If your key is from a search in rich text fields, then this is really your only option.
计算器应用程序有一个通过TRAILING关键字指定的右对齐的文本字段。
The calculator application has a text field with right justification, specified by the TRAILING keyword.
可以使用高级组件属性指定用于计算关键字和权重的信息源和字段。
Advanced component properties let you specify the information source and the fields to use to compute keywords and weightings.
清单5产生了一个简单的事件搜索表单，具有针对事件关键字、位置和类型的字段。
Listing 5 generates a simple event search form, with fields for event keywords, location, and type.
如果字段有单个值，则简单的访问程序将把(关键字，值)对添加到文档中。
If a field has a single value, a simple accessor adds the (key, value) pair to the document.
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