相反，如果花点时间确定对象模型中稳定的关系，那么可以用最小的代价派生出更稳定的词汇表。
In contrast, if you take a moment to identify the stable relationship in your object model, then you can derive a more stable vocabulary at minimal cost.
除了WSDL文档信息之外，您还可以通过遵循CDM的模型对象之间的各种关系来检索更多已发现应用程序。
Besides WSDL document information, you can retrieve more detail about the discovered application by various relationships among the model objects following the CDM.
文档对象模型将XML文档内的元素、文本和其他类型的节点呈现为一系列的父子关系。
The document Object Model represents elements, text, and other types of nodes within an XML document as a series of parent-child relationships.
业务模型为业务对象的实例定义一个模板，并让您能够指定属性和关系以及定义定制基数。
They define a template for instances of business objects and enable you to specify properties and relationships, as well as define custom cardinality.
JPA是一个用于对象关系映射以及数据支持的简化程序模型。
JPA is a simplified programming model used for object relational mapping and data persistence.
更为有效的表达方法，例如实体关系或者对象模型，可以用来解决复杂的数据映射或者查询异构数据。
More powerful representations, such as entity/relations or object models, are needed if one wants to perform a complex mapping of databases to each other or to query across heterogeneous databases.
优秀的关系数据库人员和对象模型设计者可能具有相互竞争的目标，从而使得其各自的实现也具有很大的差异。
Good relational database practitioners and object model designers can have competing goals that make their respective implementations quite different from each other.
循环关系对于RDF和对象模型非常常见。
Cyclic relationships are a common situation in RDF and in object models.
对象关系映射是使用遗留模式(可能定义时没有考虑对象模型)时的最佳解决方案。
Object-relational mapping is the best solution when you have a legacy schema, perhaps not defined with an object model in mind.
即便是中等复杂程度的关系数据库，设计的东西也和对象模型不同。
When you start to get into even intermediate complexity in your relational database, you'll design things differently than you would with an object model.
Hibernate和TopLink等工具大大简化了把对象模型映射到关系数据库模式的过程。
Tools such as Hibernate and TopLink have made it much easier to map an object model into a relational database schema.
Rails使用activerecord库处理数据库访问及数据库表与Ruby对象模型之间的对象关系映射。
Rails USES the ActiveRecord library to handle database access and object-relational mapping between database tables and Ruby object models.
与关系数据库相比，面向对象模型支持更丰富的关系
Richer relationships allowed by object orientation that aren't supported by relational databases
那么，考虑到我们在使用对象关系或OX映射的过程中发现的种种问题，为什么我们不能使用XML作为首选数据与编程模型呢？
then why can't we use XML as our first class data and programming model, given all the problems we learned the hard way with object-relational or OX mapping?
GORM有助于缓解抽象泄漏问题，它支持使用对Groovy有意义的方式表示对象模型，由 GORM在幕后处理关系数据库的问题。
GORM helps mitigate the leaky-abstraction problem by allowing you to represent your object model in a way that makes sense in Groovy.
对象Contact是模型所提供的ActiveRecord对象-关系映射。
The object Contact is the ActiveRecord object-relational mapping that the model provides.
查询语法是Erlang的一部分，数据模型类似于对象-关系数据库管理系统。
The query syntax is part of Erlang itself, while the data model is akin to an object-relational DBMS.
通过利用RailsActiveRecord类的对象-关系映射代码，这是可以实现的，该类是所有模型的基类（包括patient 类）。
That is possible by leveraging the object-relational mapping code in Rails's ActiveRecord class that is the base class for all models (including your patient class.
ActiveRecord是遵照了标准的or m模型的对象关系映射(object - relational mapping,ORM)。
Active Record is an object-relational mapping (ORM) that follows a standard ORM model.
它提供关于整个模型或模型的一部分的信息，即一组对象和它们之间的关系。
It provides information on the whole or part of a model: that is, a list of objects and their relationships.
有时候，通过大型模型导航并找到一个对象和另一个之间的关系是一个难题。
Sometimes, navigating through a large model and finding relationships between one object and another becomes a challenge.
这是将对象模型映射到关系数据库模型的一种典型框架。
This is typical of frameworks that map object models to relational database models.
在RDA中创建逻辑数据模型，就可以显示各种实体之间的关系、这些实体的属性和所有这些不同对象之间的关系。
In RDA, creating a logical data model allows you to show relationships between various entities, attributes for those entities, and the relationships between all these different objects.
右边是实体对象，称为模型对象，它们有我们需要的业务知识和业务关系。
On the right are the entity objects, known as model objects, that have the business knowledge and business relationships we need.
如果应用程序的对象模型不能够方便地转换到关系模型，那么在将对象映射到元组以及将元组映射回对象方面，会碰到一定难度。
If the object model for your application doesn't translate easily into the relational model, you'll have quite a challenge mapping your objects to tuples and back again.
多维数据集模型包含元数据对象，这些对象描述基表数据中的关系以及相关数据位于什么地方。
A cube model contains metadata objects that describe relationships within the data that resides in the base tables and also describes where pertinent data is located.
用基于 SQL 的模式可以把数据呈现从对象模型映射到关系数据模型，对象关系映射引用了这项技术。
Object relational mapping refers to the technique of mapping the data representation from an object model to a relational data model with a SQL-based schema.
变化的业务需求不断地要求向关系数据模型或面向对象模型中添加新实体和关系。
From time to time, the demands of changing business needs require that you add new entities and relationships to the relational data models or object-oriented models.
映射工具运行后，物理模型中的依赖关系将指向前一步生成的ida词汇表模型中语义相等的对象。
After running the mapping utility, the dependencies in the physical model will point to semantically equivalent objects in the IDA glossary model generated in the previous step.
另一映射类型是，表可能有一对一关系，但对象模型只有一个对象。
Another type of mapping is when a table might have a one-to-one relationship but your object model only has one object.
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