Virtualization of the entity lifecycle through Object Flow Diagrams, a basic model that captures both events and state transitions, is critical in this model.
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。
These provide a way to map object types in different repositories into a common object model in the VMM. These entity types are.
它们提供了一种方法，可以将不同存储库中的对象类型映射到VMM中的公共对象模型。
Thus, subclasses of Model in Listing 2 don't have to define properties of their own - they simply delegate any calls to a property to the underlying entity object.
这样，清单2中的Model的子类不必定义它们自己的属性—它们只是将对一个属性的所有调用委托给这个底层entity对象。
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).
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。
In most MDA situations, the model-to-model mappings are complex and require careful design and implementation.Figure 1: mapping a simple entity to object and data design models.
在大部分MDA环境中，模型到模型的映射是很复杂的，并且需要进行仔细的设计和实现。
In spatiotemporal database, geographic entity model includes spatial and temporal information of geographic object.
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。
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.
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。
The object-oriented model includes many of the concepts of the entity-relationship model, but represents executable code as well as data.
物件定向的模型含实质- 联系的模型许多观念，但是表现可运行的码和数据。
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.
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。
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.
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。
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？
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.
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。
When the object layer is generated by the Entity Data Model tools, complex objects are instantiated when the complex type property is accessed, and not when the parent object is instantiated.
若对象层是由实体数据模型工具生成的，则复杂对象将在访问复杂类型属性而不是实例化父对象时进行实例化。
When the object layer is generated by the Entity Data Model tools, complex objects are instantiated when the complex type property is accessed, and not when the parent object is instantiated.
若对象层是由实体数据模型工具生成的，则复杂对象将在访问复杂类型属性而不是实例化父对象时进行实例化。
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