在具有为数众多的列的情况下—尤其是当有些字段是巨大的VARCHAR或blob字段时—就内存使用和性能而言这种行为很有问题。
In situations with a large number of columns - particularly if some are large VARCHAR or BLOB fields - this behavior can be a significant problem in terms of memory usage and performance.
不需要寻找与数据质量相关的所有列、字段和元素，只需要找到影响信息结构和信息理解的那些元素。
Not all defined columns, fields, and elements are relevant to data quality, only those that affect the structure and understanding of information.
可以将中间对象的一个或多个字段映射到某个表中的列。
One or more fields of the intermediate object can be mapped to columns in a table.
现在您必须在数据库中创建一个表，并指定该表中应该包含哪些字段(字段与列类似)。
Now you must create a table within this database and specify how many fields the table should contain (a field is analogous to a column).
表格的每一行代表一条记录，表格的每一列代表一个字段。
Each row in the table represents a record, while each column in the table represents a field.
源和目标列中都提供了一个过滤器，可以使字段的查找变得非常容易。
A filter is provided on both the source and target columns to make finding such fields easier.
在该例中，每个列的值都在由用户输入的文本表单字段中。
In this case, each column value was entered by the user into a text form field.
您可以直接添加一个列，或者从已存在的列中删除掉字段以腾出空间。
You can add a column directly or delete the fields from existing columns to make room.
元编程框架经常需要支持一些外部决策，例如决定哪个列或内部字段对用户重要。
Often, metaprogramming frameworks need to allow aesthetic decisions, such as deciding which columns or internal fields are important for the users.
记录或行包含一组包含了数据的字段或列。
A record or row contains a set of fields or columns containing data.
因为您可能发现自己受制于地址字段的长度，所以您还必须在关系系统中指定列类型。
You also have to specify column types in a relational system, so you might find yourself constrained by, say, the length of the address field.
RPG使用一个1字符字段（比如一个指示符）来确定列是否包含空值。
RPG uses a 1 character field (like an indicator) to determine if a column contains nulls.
INFO列包含一个XML文档，表示来自源文件的所有字段（包含帐户ID信息）。
The INFO column contains an XML document representing all fields from the source file (including the account ID information).
通过填充表2列出的字段，启用或禁用附件整合。
Enable or disable the use of attachment consolidation by completing the fields shown in table 2.
请您列定义的顺序和SQL查询中的数据字段相符。
Make sure the column definition order matches the data fields of the SQL query.
如果值存在，则将其追加到与字段名关联的散列值后，因为这样做将启用每个字段组合的简单输出，而不管哪些字段匹配。
Append the value to the hash value keyed on the field name if it already exists, as this will enable the simple print out of every combination of the field no matter which of the fields matched.
如您所见，xml源代码中的文档包含于标签中，列(字段)包含于标签中。
As you can see, documents in the XML source are presented with the tag, and columns (fields) are presented with tags.
拖放字段以使用提供的三列来定制表单的布局。
Drag and drop fields to customize the layout of the form using the three columns provided.
默认情况下，列可以包含null值，但是，如果不想这样，可以在字段定义中附加“NOT NULL”后缀。
By default, a column can contain a NULL value, but if you don't want that, you can append the "NOT NULL" postfix to the field definition.
映射指定数据文件的字段和数据表的列之间的关系。
A map specifies the relationship between the fields of a data file and the columns of a database table.
它有与数据库列对应的字段及用于每个字段的常用存取器(getter和setter)。
It has fields corresponding to the database columns and the usual accessors (getters and setters) for each field.
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.
airport和trip表中的所有列均与对应的域类中的字段匹配。
The columns in the airline, airport, and trip tables all match the fields in the corresponding domain classes.
导入的数据库(表、列)和基于表结构的文件及其字段。
Imported databases (tables, columns) and table-structured files and their fields.
选择totalPrice输入字段，按下ctrl键，然后单击subtotal列标题标签。
Select the total Price input field, press the Ctrl key, and click the Subtotal column header label.
图10显示活动的imagefield列，它位于Northwind雇员表的照片字段。
Figure 10 shows the ImageField column in action on the photo field of the Northwind Employees table.
对于这其中的每条记录，都将按名称提取字段并将每个字段值存储到与字段名关联的散列中。
For each of these records, we will extract the fields by name and store each of the values in a hash keyed on the field name.
这些字段必须在位置和数据类型方面与虚拟表CATEGORIZED中的列相匹配。
These must match in position and data type with the columns in the virtual table CATEGORIZED.
如果列表中的对象支持多个字段，那么实际上这里可以使用多个列。
You actually can have multiple columns if the objects in your lists support multiple fields.
另外一列链接到另外一个表上，其中列出了这个多值字段所有可能的值。
The other column links to another table that lists all the possible values for that multivalue field.
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