Case 7: Using user-defined types (UDT).
用例7：使用用户定义类型(udt)。
Exceptions cannot be used as data members of user-defined types.
异常不能当作用户定义类型的数据成员使用。
This allows more control over the coercion behavior of user-defined types.
这样就可以进一步强制性的控制用户定义类型。
Too few initializers were specified for an array of user-defined types or constants.
使用者定义具型别阵列或常数阵列所指定的初始设定式过少。
The three most prominent data structures in Haskell are tuples, lists, and user-defined types.
Haskell中最突出的三种数据结构是：tuple、列表(list)和用户定义的类型。
We will look at helper classes, more complex mappings like enum and union, and user-defined types.
我们要来研究一些更有用的类，更加复杂的映射如和enum和union ，以及用户定义的类型。
Both types of sequences may contain no elements, user-defined types, or they may contain other sequences.
这两种序列都可以不包含元素、用户定义的类型，但可以包含其它序列。
It also has an open type system and therefore must contain extensive infrastructure to map user-defined types.
它也具有开放型别系统，因此必须包含广泛的基础结构，以对应使用者定义的型别。
Common problems it can fix include replacing text columns with varChar (Max) and converting user-defined types to their base types.
向导能修复的一些常见问题有：使用varChar (max)替换text列、将用户自定义类型转换为基类型等。
One thing to be aware of regarding DB2 index extensions is the requirement for user-defined types - either distinct types or structured types.
对于DB 2索引扩展要注意的一点是对用户定义类型的需求—distinct类型或结构化类型。
The attribute types can be basic (for example, Integer, String) or complex data types (for example, the user-defined types like Order and CreditCard).
可以将属性类型定为基本类型(例如，Integer或String)或复杂数据类型(例如，用户定义的类型，如Order和CreditCard)。
A database object can have zero to many (0.. n) schemas, and a schema can have zero to many (0.. n) tables, indexes, user-defined types, routines, and so on.
每个数据库对象有0到多个(0. .n)模式，每个模式可以有0到多个(0 . . n)表、索引、用户定义类型和例程等。
This is an example of employing user defined data types in SOAP requests.
这是一个在SOAP请求中使用用户定义数据类型的示例。
Others can be defined by the user, by extending or restricting the basic types.
其他的可由用户通过对基本类型进行扩展或限制进行定义。
A functional index can be created on user defined types.
函数索引可以根据用户定义的类型创建。
Data model extensibility for new data types, and support for system and user defined metadata.
针对新数据类型的数据模型扩展性，支持系统和用户所定义的元数据。
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.
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。
It may optionally support user defined types, which can greatly simplify the required expressions.
作为可选项，也有可能支持用户自定义类型，这将极大的简化所要求的表达式。
Sequences may contain elements of all types whether fundamental types or user-defined.
序列可以包含所有类型的元素，不管是基本类型还是用户定义的类型。
There are two defined key types: keyring and user.
有两种预定义的密钥类型：keyring和user。
Import user defined types (signal parameters).
导入定义类型的用户(信号参数)。
(The examples in this article to this point have been user-defined simple types (see ProductCode)).
(到目前为止本文中的例子都是用户定义的简单类型，比如productCode)。
The union member can be any type, including user-defined complex types.
联合成员可以是任何类型，包括用户定义的复杂类型。
You are also able to specify data types for variables, input parameters, return values from functions, user-defined functions and templates.
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。
Finally, I briefly covered the topic of user-defined data types, which is an advanced topic that needs detailed study.
最后，我简述了用户定义数据类型的主题，它是一个需要我们仔细学习的高级主题。
In the next part of this series of articles, you will see more examples of user-defined data types.
在此系列文章的下一部分，您会学习更多的用户定义数据类型示例。
For example, tables may depend on user-defined distinct types; check constraints depend on functions; views depend on views, aliases, and functions; and so on.
例如，表可能依赖于用户定义的不同类型；检查约束依赖于函数；视图依赖于视图、别名和函数；等等。
These attributes are either added directly by primitive XSD data types or associated by other types defined in user-specific schemas.
这些属性要么直接由原始XSD数据类型添加，要么与特定用户模式之中定义的其他类型相联系。
The second major element that SOAP brings to the table is a simple means of encoding user-defined data types.
soap带给表的第二个主要元素是编码用户定义的数据类型的简单方式。
We can process both types of exceptions, the threshold exceptions that are user-defined and the event exceptions for deadlocks.
我们可以处理两种类型的异常：用户定义的阈值异常和针对死锁的事件异常。
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