产品类型层次结构是否分为很多层？
产品类型层次结构是相对静态的。
The product type hierarchy is intended to be relatively static.
不应当将其与产品类型层次结构混淆。
It should not be confused with the product type hierarchy. Here are some points to differentiate the two.
定义产品类型层次结构。
在方法级别注释完全覆盖注释类型层次。
The annotation at the method level completely overrides the annotation at the type-level.
只有一个产品类型层次结构，但是可以有多个类别层次结构
There is only a single product type hierarchy, whereas there can be many category hierarchies
产品类型层次结构定义了您希望对之进行管理的产品的类型。
The product type hierarchy defines the types of products you wish to manage. MDM Server provides the product type hierarchy, as shown in Figure 1, out of the box.
数据库已经变得更强大了，所以这个类型层次结构也变得更复杂。
As databases have become more powerful, this type hierarchy has grown more complex.
Python3现支持能代表数值类的ABC的类型层次结构。
Python 3 now supports a type hierarchy of ABCs that represent numeric classes.
产品类型层次结构：这种层次结构中的每个类别代表一个产品类型。
Product type hierarchy: a category in this hierarchy represents a product type.
定义了产品类型层次结构及每个产品类型的元素后，就可以创建产品了。
You can create products once you have defined the product type hierarchy and elements for each product type.
如果产品类型层次结构是比较静态的，包括类型元素，那么考虑固定这些类型。
If the product type hierarchy is relatively static, including the elements of the type, then consider hardening the type.
要表示现成的产品类型层次结构的现有产品表，可以使用附加的元素进行扩展。
The existing product tables representing the product type hierarchy provided out the box can be extended with additional elements.
另外，还有从指针，数据，结构和联合而产生的导出数据类型层次。
In addition, there is a hierarchy of derived data types created with pointers, arrays, structures and unions.
在构建好复杂类型层次结构之后，还可以在实例文档中使用替换技术。
With complex type hierarchies in place, it's also possible to leverage substitution techniques in instance documents.
接口XMLEvent表示类型层次结构的根，所有类型的事件必须扩展该接口。
Interface XMLEvent represents the root of this type hierarchy; all event types must extend this interface.
产品类型层次结构是一个严格的树，而类别层次结构则是一个有方向的非循环图表。
A product type hierarchy is a strict tree, whereas a category hierarchy can be a directed acyclic graph.
如果产品类型层次结构相对简单(只有3或4层)，那么数据库访问就会简单一些。
If your product type hierarchy is relatively flat (only three or four levels deep), then there is less of a concern with database access.
定义了产品类型层次结构后，可以继续定义希望为层次结构中的每个类型捕捉的数据。
After you have defined the product type hierarchy, you can then define the data you wish to capture for each type in the hierarchy.
把产品映射到产品类型层次结构中的类别，就可以形成某类型的产品 这样的语义概念。
Mapping a product in a product type hierarchy into a category establishes the semantic notion of product of type x.
这种产品类型层次结构使用元数据结构进行定义，并具有一组相关数据库表和业务服务。
This product type hierarchy is defined in a metadata structure and has an associated set of database tables and business services.
然后遍历元素声明的代替链或类型层次结构，以决定元素声明是否满足代替或类型衍生要求。
They then traverse a substitution chain of element declarations or a type hierarchy to determine whether the element declaration satisfies the substitution or type derivation requirements.
我们会给Person加一个属性-角色，用来指定对应的实例是类型层次结构中的哪一种。
We'll also add another attribute to Person, a role field that points to an instance from a type hierarchy.
本教程讲解如何实现新的类型层次结构并定义相关的服务，从而支持这种特殊化处理。
This tutorial shows you how to implement new type hierarchies and define associated services that allow for this specialized processing.
类似地，如果必要的话，添加到产品类型层次结构的任何新产品类型都可以添加到一个具有相关服务集合的模型中。
Similarly any new product types you added in the product type hierarchy can be added into the model with a related set of services if required.
下面的代码示例演示如何利用连接获取元数据工作区，然后使用该元数据工作区浏览元数据类型层次结构。
The following code sample demonstrates how to get a metadata workspace from the connection and then use that metadata workspace to browse the metadata type hierarchy.
把产品映射到产品类型层次结构中的类别，就可以形成某类型的产品这样的语义概缉础光飞叱读癸嫂含讥念。
Mapping a product in a product type hierarchy into a category establishes the semantic notion of product of type x.
规范化决定在逻辑数据模型中得以完成，并导致实体-实体关系与超类型-子类型层次关系的最终规范化表示。
Normalization decisions are finalized in the logical data model resulting in the final normalized representation of entity-to-entity relationships as well as supertype-to-subtype hierarchies.
类型层次结构，业务中各种类型的元素通过类型层次结构彼此关联（客户类型包含白金客户、金卡客户和银卡客户）。
The type hierarchies by which types of elements into business are related to one another (Customer Type with Platinum, Gold, and Silver).
复杂类型定义支持通过扩展和限制进行派生，这就允许以一种映射到面向对象类层次结构的方式定义复杂类型层次结构。
Complex type definitions support derivation by extension and restriction, allowing you to define complex type hierarchies in a way that maps nicely to 00 class hierarchies.
应用推荐