If any object to be restored references an object in another schema, and this object does not exist in the target database, the procedure will fail.
如果恢复的任何对象引用另一个模式中的对象，而被引用的对象在目标数据库中不存在，那么这个过程将失败。
Mapping solutions seek to build an object model that closely resembles the structure of the database schema.
映射解决方案试图构建一个与数据库模式的结构非常相似的对象模型。
The “bottom up" approach assumes you already have database table schema and need to develop an object layer and object relational mapping from the table schema.
“自下而上”方法假设已经有数据库表模式，而需要根据表模式开发一个对象层和对象关系映射。
It's rare that a good object model will make a good database schema (or vice versa).
一个好的对象模型很少会生成一个好的数据库模式(反之亦然)。
The simple format above makes the Friend object and database schema simple.
上面的简单格式使得Friend对象和数据库模式也简单。
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。
Tools such as Hibernate and TopLink have made it much easier to map an object model into a relational database schema.
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。
Each change in the database schema has its own migration object, encapsulating a move up and a move down. Listing 1 shows an empty migration.
数据库模式中的每个变化都有自己的迁移对象，迁移对象包装了前进和后退。
You can see examples of the use of this phrase throughout the programming world with Extensible Markup Language (XML) schema, database schema, object schema, and so on.
您可以在使用可扩展标记语言(Extensible Markup Language,XML)模式、数据库模式、对象模式等的编程世界中看到使用这一术语的例子。
Many tools can help you in creating a good database schema, just as many tools can assist in designing object-oriented systems.
许多工具都能帮助您创建良好的数据库模式，就好像许多工具都能协助设计面向对象的系统一样。
In short it aims to model your entire database schema dynamically, querying its information schema and eliminating the need for object-relational mapping in your application code.
简单来说，它是用来为你的全部数据库schema动态建模的，并可查询它的信息schema、消除应用程序中的面向关系映射。
This field indicates whether the files in the database project are organized primarily by schema or by object type.
此字段指示数据库项目中的文件主要按架构还是按对象类型来组织。
Create scripts are SQL script files that you can run to recreate the schema of a database object.
创建脚本是sql脚本文件，您可以通过运行创建脚本重新创建数据库对象的架构。
You can change the default schema before you add a database object.
您可以在添加数据库对象前更改默认架构。
Schema View, expand the database project and locate the object that you want to modify.
“架构视图”中，展开数据库项目并找到要修改的对象。
The Mapping process each element in DTD and mapping to an object schema. Then the object schema is mapped to the relation database schema.
映射的策略是以分析处理DTD中的每一个元素映射为对象模型，再由对象模型映射为数据库的关系模型。
This topic explains how to preview the changes before you rename a database schema object.
本主题解释如何在重命名数据库架构对象之前预览更改。
In this paper, based on a schema translation from Object-Oriented Database (OODB) to Relational Database (RDB), it proposes an algorithm for translating OODB query to RDB query.
文章基于从面向对象数据库(OODB)到关系数据库(rdb)的模式转换，提出了一种从面向对象数据库查询到关系数据库查询的转换算法。
The database object is added in the Default Schema specified in the database project properties.
此资料库物件会加入到资料库专案属性所指定的预设结构描述中。
You can use this approach whether you have organized your database project by schema or by object type.
无论按架构还是按对象类型来组织数据库项目，均可使用此方法。
When you use a conceptual model to describe the data in a database, you can query data through your objects instead of having to translate back and forth between a database schema and an object model.
当您使用概念模型来描述资料库中的资料时，可以透过物件查询资料，而不需要在资料库结构描述和物件模型之间来回转译。
Move a database object to a different schema: you can use refactoring to move a database object to another schema and automatically update all references to that object in your database project.
将资料库物件移至不同的结构描述：您可以使用重构将资料库物件移至另一个结构描述，并自动更新资料库专案中该物件的所有参考。
Move a database object to a different schema: you can use refactoring to move a database object to another schema and automatically update all references to that object in your database project.
将资料库物件移至不同的结构描述：您可以使用重构将资料库物件移至另一个结构描述，并自动更新资料库专案中该物件的所有参考。
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