图4：分析实际的数据库架构。
更新数据库架构，比如更改表或添加表。
Updating the database schema, such as altering tables or adding tables
数据库架构师—数据库建模与物理布局。
数据库架构通常在应用程序部署到生产之后更改。
Database schemas often change after applications are deployed into production.
可以对正被更名的列和其他数据库架构更改采用类似的方法。
A similar approach can be taken for columns being renamed and other database schema changes.
首先创建一个简单的事件数据库架构，类似于清单2中的架构。
First, create a simple database schema for events like the schema shown in Listing 2.
自顶向下映射：根据现有的企业bean创建一个映射和一个数据库架构。
Top-down mapping: creates a mapping and a database schema based on the existing enterprise beans.
可能的原因是业务需求或特性功能发生了变化，因此也要求更改数据库架构。
There might be changes in business requirements or feature functionality that require changes to the database schema as well.
创建一个关系型DAS实例：创建关系型DAS的一个重要方面是描述它应使用的数据库架构。
Create a Relational DAS instance: an important aspect of creating the Relational DAS is describing the database schema it should use.
在正常部署过程中，信息(如数据库架构名称)会不断变化，而在源中具有此信息无疑会阻碍部署。
Information — like the database schema name - changes all the time during a normal deployment process, and having this in the source would definitely hinder deployment.
它提供了模型化的框架，能够让开发人员为数据库架构定义一个与真实世界信息相似的概念化的模型。
This provides a modeling framework that enables developers to define a conceptual model of a database schema that closely aligns to a real world view of the information.
接下来我们必须添加一个计划(schema)区域到模型中以使数据库架构师可以跟踪数据建模的工作。
Later we had to add a schema area to the model to track data modeling efforts by the database architect.
当对这种类型的升级使用多个单元时，需要考虑其他数据库更新策略，因为在生产中运行的单元将不会识别新的数据库架构。
Additional database update strategies need to be considered when using more than one cell for this type of update, because the cell running in production will not be aware of the new database schema.
另一个增强的特性是Rhodes的新的元数据框架，该特性可以让开发自定义数据库架构和更改数据库架构变得极其简单。
Another addition that makes developing against customized and changing database schemas a lot easier is Rhodes' new metadata framework.
如果您的项目处于开发阶段，今后更改数据库架构可能会导致巨大的代码更改，从而阻碍可交付结果的及时交付并降低质量，进而增加成本。
If your project is in development, late changes to the database schema could trigger significant code changes that jeopardize the timely delivery and quality of the deliverable, thus increasing cost.
下一小节展示当数据库架构需要更改时，Optim DevelopmentStudio如何减少生产中的应用程序的关联成本。
The next section shows how Optim Development Studio reduces the cost associated with applications in production when it comes to making changes to database schemas.
自主解决方案还可以减轻数据库管理员管理复杂数据架构的负担。
An autonomic solution also reduces the burden on database administrators to manage complex data architectures.
所以，如果你的项目需要成功地解决UI、数据库或架构风险，开发者必须要掌握相应的技能。
So if you need your project to successfully handle UI, database, or architecture risks, your developers must have those skills.
在对数据库对象的架构进行了考虑之后，逻辑模型就被转化为物理模型。
The logical model is then converted into a physical model, with consideration given to the architecture of the database objects.
图1说明了分区数据库环境中的DB 2架构。
Figure 1 illustrates the DB2 architecture in a partitioned database environment.
应用于多租户架构的数据库模式可能会有不同，因此必须进行相应的规划。
Specific database schemata patterns apply to multi-tenant architectures, and these must be planned for accordingly.
MySQL的优势是其“插件”架构支持从其他数据库服务器获取可扩展特性。
MySQL's strength is that its "plug-in" architecture enables extensible features available from other database servers.
本节将对DominoDiscussion数据库web服务应用程序中使用的架构进行概述。
This section gives an overview of the architecture used in the Domino Discussion database Web services application.
这种架构使“旁观者”与数据库服务器分离，以便它们能够在不使问题加重的情况下查看状态。
This architecture keeps the "spectators" away from the database server so they can see the status without adding to an existing problem.
在P8架构中，应用程序不能直接访问后端数据库。
In the P8 architecture, applications do not have direct access to the backing databases.
由于组件测试处理一个架构的多个层次，所以它们经常用于处理数据库、文件系统、网络元素等。
Because component tests deal with multiple layers of an architecture, they often deal with databases, file systems, network elements, etc.
业务用户可能知道涉及到数据库，但是不太清楚保持数据有条理、相关、链接、当前、一致和可用所需的复杂架构。
Business users may be aware that a database is involved, but have little idea of the complex architecture needed to keep their data organized, related, linked, current, consistent, and available.
FastSOA是一种架构，提供了中间层服务绑定，XQuery处理器和本地XML数据库。
FastSOA is an architecture that provides a mid-tier service binding, XQuery processor, and native XML database.
如果处理不当的话，SQLRelay将在应用程序架构中引起新的单点故障弱连接，这将消耗更多CPU周期并在数据库检索中引入延迟和错误。
If mishandled, SQL Relay creates a new single-point-of-failure weak-link in an application architecture, one that consumes extra CPU cycles and introduces delays and errors in database retrieval.
地理上分布的组织应该考虑将每个主要的组件(框架、数据库、应用程序，……)的所有权分配给单独位置的企业架构。
A geographically distributed organization should consider an enterprise architecture that distributes ownership of each major component (frameworks, databases, applications,...) to a single location.
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