可以添加额外的代码来执行一个检查，检查新值是不是一个用户定义值，用以表明数据库值应该被设置为NULL或针对该列定义的默认值。
Additional code could be added to perform a check to see if the new value is a user-defined value indicating that the database value should be set to NULL or the default value defined for the column.
通过TP，用户可以手动地定义每个数据分区，包括将被包括到那个分区的值的范围。
With TP, the user can manually define each data partition, including the range of values to include in that data partition.
具有可配置更新设置的对象包括受控词汇表(CVL)、库属性定义、库属性值列表、本机文件夹列表以及用户和组列表。
The objects with configurable update Settings are controlled vocabulary lists (CVLs), library property definitions, library property values lists, native folder lists, and user and group lists.
在ui层，值字段如果不是由这个信息域定义，那么通常只是用户必须填写的输入框，这就有可能产生输入错误。
At a UI level, the fields for values not defined by this information domain are frequently just boxes that a user must fill in, which leaves room for typing mistakes.
清单13展示了一个特定的错误如何将控制转移给退出处理程序，其中根据SQLCODE的值返回用户定义的错误消息。
Listing 13 demonstrates how a specific error can transfer control to the exit handler where a user-defined error message is returned depending on the value of the SQLCODE.
字段类型、选项、默认值和字段顺序等都由用户定义，从而为文档添加定制的数据元素。
The field types, options, default values, field orders, and so on are defined by the user to attach a custom form of data elements to the document.
并编写一个简单使用动态sql的SQL用户定义函数(UDF)，转换字符串中传入的公式并计算值。
And writing a simple SQL User Defined Function (UDF) that USES dynamic SQL to convert the formula passed in the string and calculate the value.
许多软件为各种选项定义默认值，以便用户可以尽可能快地运行。
Many pieces of software will have default values defined for various options so that the user can get running as quickly as possible.
在小部件的XML描述器中定义的用户首选项(可以通过传递首选项的名称分配一个值)前面有一个_ up，作为服务的请求参数。
User preferences defined in the XML descriptor of the gadget, which can be assigned a value by passing the name of the preference, preceded with _up, as a request parameter to the service.
Layouts内容资源将根据我们马上要定义的业务规则包含给定用户的特定值。
The Layouts content resource will contain specific values for a given user based on a business rule that will soon be defined.
随后，只要用户修改词典，就会使用该词典替换PreferenceInitializer中定义的默认值。
Subsequently, as soon as the user modifies the dictionary, that dictionary is used in place of the default values defined in the PreferenceInitializer.
部署KPI定义时，或者用户通过仪表板动态创建 KPI 时，MonitorV6.2就开始每小时捕获一次 KPI的历史记录值。
When a KPI definition is deployed, or when a user dynamically creates a KPI through the dashboard, Monitor V6.2 begins capturing the historical values of the KPI on an hourly basis.
xml：IzPack特有的xml脚本，用于定义用户在一个安装程序面板中输入信息时的行为(验证、默认值、字段大小等)。
UserInputSpec.xml: an IzPack-specific XML script for defining behavior (validation, default values, field size, and so on) when a user enters information into an installer panel.
它还让用户可以显示应用程序中任意未定义的值。
It also allows the user to display any undefined values in the application.
在进行实例化的时候，激活引擎使用用户在其自定义激活配置文件中所提供的特定值，将这些命令行选项传递到激活脚本。
At instantiation time, the activation engine USES the specific values provided by the user in his customized activation profile to pass the command line options to the activation scripts.
文档类型和扩展名是用户定义的值，它们应当能够表示新文档类型的意义。
The document type and extension are user-defined values, and they should recommend the new document type.
因此，为了实现动态查询，用于获得值的唯一选项是向中介原语引入用户定义的属性。
Therefore, the only option to obtain the values used for the query dynamic is to introduce user-defined properties to the mediation primitive.
可以使用NULL TEXT选项将一个列中的null值替换为用户定义的文本。
NULL values in a column can be replaced by user-defined text using the NULL text option.
你可以可以为变量指明数据类型，输入参数，来自函数的返回值，用户自定义函数以及模板。
You are also able to specify data types for variables, input parameters, return values from functions, user-defined functions and templates.
内容类型允许用户定义将为实体收集并存储的字段值。
A content type allows users to define what field values are collected and stored for an entity.
数据覆盖：将包含在转储中的字节值覆盖为用户定义的值，并让UI使用更新后的值。
Data overlays: the ability to override the byte values contained in a dump with user-defined values and have the UI work with the updated value.
静态参数允许用户选择预先定义好的值集或者在文本框中输入一个值。
Static parameters are parameters that allow the user to select from a predefined set of values or to enter a desired value, for example, in a text box.
对于自定义注册中心，此插件还考虑配置参数usedisplayname值，以便作为与调用方主体名称对应的查询结果返回用户注册中心参数。
For custom registries, it also considers the configuration parameter UseDisplayName value, in order to return the user registry parameter as query result that corresponds to the caller principal name.
任何有效sqlstate值都可以用于signal语句中，包括用户定义的SQLSTATE和条件。
Any valid SQLSTATE value can be used in the SIGNAL statement, including user-defined SQLSTATEs and conditions.
第2行用一个可选值来定义类，这意味着用户可以提供该类，也可以不提供，这用Type ？
Line 2 defines the class with an optional value, which means that the user can provide it or not, and it is denoted with the Type? Pattern.
一个名为userspace1的大表空间，用于存储所有用户定义对象，以及表数据、索引数据、大对象(LOB)数据和长值数据。
A large table space named USERSPACE1, which is used to store all user-defined objects along with table data, index data, large object (LOB) data, and long value data.
WebSphereBusinessIntegrationMessageBroker在其自定义文件中有大量用户自定义的值，这些值将影响自动重启管理。
WebSphere Business Integration Message Broker has a number of User Defined Values in its Customization file that affect Automatic Restart Management.
DisplayName由用户定义，可以是任何值。
报告模板包括一个Parameter窗口，用户可以在该窗口中为不同的参数编辑值，或者从预定义的列表中选择值。
The report template includes a parameter window in which users can edit values or select from predefined lists for different parameters.
因此，考虑使用一个uacc值NONE为它定义一个MXTOPIC配置文件，访问列表中没有用户。
So, consider defining a MXTOPIC profile for it with a UACC of NONE, and no users in the access list.
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