实体对象代表数据模型。
实体对象是JPA应用程序中使用的主要模型。
Entity objects are the primary model used in JPA applications.
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.
以我个人经验,我注意到人们在已经有现有的使用JPA或Hibernate进行持久化的实体定义的数据模型时,通常会选择使用对象。
In my personal experience, I saw that people always choose to use Objects when they already have a previously define data model that is persisted using JPA or Hibernate Entities.
WebSphereInterChangeServer为业务实体提供公共的业务对象模型。
WebSphere InterChange Server provides a common business object model for business entities.
例如,每个Dictionary对象封装不同的翻译数据集合,但是这些不同实体的模型定义在单个Dictionary类中。
Individual Dictionary objects encapsulate distinct sets of translation data, for example, yet the model for these varying entities is defined in the single Dictionary class.
服务描述实体是ServiceRegistry提供的信息模型中的一个元数据类别,其中包括物理文档、逻辑派生和一般对象。
Service description entities are a category of metadata in the information model maintained by Service Registry that includes physical documents, logical derivations and generic objects.
使用对象流图(它是捕获事件和状态转换的基础模型)虚拟化实体生命周期是这个模型的关键。
Virtualization of the entity lifecycle through Object Flow Diagrams, a basic model that captures both events and state transitions, is critical in this model.
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.
该编程模型还定义了POJO(实体)对象的分离模型。
The programming model also defines a detachment model for the POJO (Entity) objects.
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.
属性面板:该面板显示打开且活动的对象(即一个逻辑数据模型中的数据模型或实体)的属性。
Properties pane: This pane shows the properties of the object that is open and active (in other words, a data model, or an entity inside a logical data model).
这些类按照特定的概念模型派生自可以将实体物化成对象的支持对象服务的基类从而可以实现跟踪和保存变更。
The classes generated for a particular conceptual model derive from base classes that provide Object Services for materializing entities as objects and for tracking and saving changes.
OrderItems表是多对多关系中Orders和Products的连接表,这样也不能代表对象模型中的一个实体。
The OrderItems table is a link table in a many-to-many relationship between Orders and Products. As such, it does not represent an entity from the business model.
由于其海量和非结构化等特征,实体对象层次模型、群集多服务器体系被提出用以集成并实施高效的空间数据管理。
Because it's massive and unstructured, Feature-Oriented Object Level (FOOL) and Multi-servers cluster system are used to integrate and manage spatial data effectively.
在时空数据库中,地理实体模型包括地理对象空间信息和时态信息。
In spatiotemporal database, geographic entity model includes spatial and temporal information of geographic object.
本文引入面向对象的时空数据模型,把各种实体作为对象,把道路作为面状要素描述。
The paper introduced object oriented spatiotemporal data model, looked on all kinds of things as objects and described road as face shape element.
它是以从系统行为基层进到实体对象行为的方式思考问题的,是虚拟模型方法的具体体现,也符合决策者的设计思维。
It follows the way of thinking from the system behavior to physical object behavior, being an embodiment of the virtual model methods and in line with the decision makers 'way of thinking.
但是,若要为与其他类型存在关联的实体类型定义一个MEST模型,则必须为对象图中的每个类型实现MEST。
However, to define a MEST model for entity types that do have associations with other types, you must implement MEST for each type in the object graph.
不过,您仍然能够通过添加基于实体数据模型的新对象数据源,然后将这些对象拖到设计器来创建数据绑定控件。
However, you can still create data-bound controls by adding a new object data source that is based on the Entity data Model, and then dragging those objects to the designer.
介绍了以拓扑关系数据为基础的GIS空间点、线、面对象实体模型,给出了基于对象实体模型的自动拓扑关系模型。
This paper introduces the GIS space point? Line? Surface entity model based on topology data and the automatic topology model which is based on the objects model.
特性的基类,这些特性定义如何将对象层中的类型映射到概念模型中的实体类型和复杂类型。
Base class for attributes that define how properties of types in the object layer are mapped to the properties of entity types or complex types in the conceptual model.
技术如实体框架和WCF数据服务使用转换到的数据库操作的对象操作的概念模型。
Technologies such as the Entity Framework and WCF data Services use conceptual models to translate object operations into database operations.
第四章介绍如何利用面向对象的方法建立船舶结构的三维实体模型,同时给出相关的数据结构;
The fourth chapter tells how to build 3D solid model for hull structure applying the oriented object technology, furthermore, the corresponding data structures are presented.
因此,在这样的一个模型下,必须对内网中所有实体对象进行更加全面、颗粒度更小的安全管理以及控制。
So beneath this security attacking model of inner-mesh, we have to get more special security control management for all the component points and participants.
根据计算机生成兵力的特点提出了基于控制论的CGF实体对象行为模型ESCP的概念模型、形式化模型和结构模型。
Based on the characteristic of CGF, the thesis presents a behavior model of CGF entity named ESCP and its concept model, formalization model and construct model.
面向对象的地理信息模型以地理空间实体为对象,地理实体可以从几何数据、符号数据、实体数据、属性数据的角度来进行数据的组织。
A geo-spatial entity which can be organized from geometric data, symbol data, entity data, attribute data is regarded as an object to the object oriented geographical information model.
虽然建造基本的ER模型是很容易的,但是区别他们在建设数据库时所处的地位并不容易,什么决定了一个对象是实体还是属性呢?
Although it is easy to define the basic constructs of the ER model, it is not an easy task to distinguish their roles in building the data model. What makes an object an entity or attribute?
虽然建造基本的ER模型是很容易的,但是区别他们在建设数据库时所处的地位并不容易,什么决定了一个对象是实体还是属性呢?
Although it is easy to define the basic constructs of the ER model, it is not an easy task to distinguish their roles in building the data model. What makes an object an entity or attribute?
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