由于几家银行的合并，数据库数据模型需要进行一些显著的修改。
Because of a merger of several Banks, the database data model requires some significant changes.
此阶段涉及到服务、组件、底层物理数据模型和数据库对象的开发。
This phase involves the development of services, components, the underlying physical data model, and database objects.
RDA还通过物理数据模型的摘录支持被部署的数据库的可视化。
RDA also supports visualization of deployed databases through the extraction of physical data models.
它寻找用于创建数据模型、数据库连接或ddl脚本的相同方法，然后执行比较，并在比较面板中显示结果。
It seeks the same method used to create the data model, a database connection, or a DDL script, then performs the compare, and displays the results in the compare pane.
但是根据数据库的编目表创建数据模型并不是惟一的选择。
But creating a data model based on a database's catalog tables is not the only option.
然后，开发人员可以使用ODS将这个物理数据模型与他们的数据库连接关联起来。
Developers using ODS can then associate this physical data model with their individual database connections.
了解关系数据库、数据模型、惟一键、主键、外键和表联结。
Learn about relational databases, data models, unique keys, primary keys, foreign keys, and table joins.
可以对DDL文件或数据库本身进行反向工程，生成数据模型。
You can reverse engineer your database into a model using a DDL file or from the database itself.
RDA中的逻辑数据模型对于数据库的意义，就如同设计草图对于建造房屋的意义。
The logical data model in RDA is to databases as sketches are to designing a house.
逻辑数据模型用来创建设计数据库所需的蓝图。
Logical data models are used for creating the blueprint needed to design your database.
租户可以直接对自己的数据库/模式修改数据模型，不会影响其他租户。
The changes of the data model of one tenant can be made directly to its specific database/tables without impact to other tenants.
为了应对日益复杂的异类数据库环境，人们意识到需要创建企业数据模型（Enterprise Data Model，EDM）。
To deal with increasingly complex and heterogonous database environments, people realized a need to create an Enterprise Data Model (EDM).
为了创建这些数据模型元素，在数据库中必须有一个schema。
There a schema must exist in the database in order to create these data model elements.
使用ASP.NETDynamicData的功能构建的应用程序为数据库的数据模型提供查看，编辑，过滤和排序操作。
The application created uses the ASP.NET Dynamic Data features to offers viewing, editing, filtering and sorting operations over the data model of the underlying database
XUpdate用于处理常规的XML文档以及数据库集合中的 XML，甚至虚拟的 XML 数据模型。
XUpdate is designed to work on regular XML documents as well as XML in database collections, and even virtual XML data models.
要构建后端，首先要为MySQL数据库定义数据模型。
To build out the back end, start with defining the data model for the MySQL database.
通过使用RationalDataArchitect的反向工程特性，很容易为数据库创建数据模型。
You can easily create a data model from your database using Rational data Architect's reverse engineer feature.
DB - aware对象创建的SQL语句根据所访问数据库的物理数据模型而生成。
The SQL statement created by the DB-aware objects will be generated based on the physical data model for the database being accessed.
VisualStudio 2010可以生成ddl并创建数据库来存储实体数据模型。
Visual Studio 2010 has to ability to generate a DDL and create a database to store the entity data model.
数据模型常常不是从头创建的，而是从现有的数据库体系结构创建数据模型。
Data models that are not created from scratch are usually created from an existing architecture of the database.
它们从数据库捕获核心数据模型以及应用于这些数据的业务规则。
They capture the core data model from the database and also the business rules that apply to this data.
物理数据模型是与数据库系统以及您将使用的数据仓库工具紧密相关的。
The physical data model is tightly related to the database system and data warehouse tools that you will use.
物理数据模型可以提供数据库实体的视图，您可以做出设计决策，然后在当前的数据库模型中实现这些决策。
The physical data model gives you a picture of your database entities and lets you make decisions, then execute them on your current database model.
您可以将更多特定于数据库的信息添加到多维物理数据模型，但是我们此处不做过多介绍。
You can add more database-specific information to the dimensional physical data model, but we will not introduce much here.
物理数据模型是数据库特定的，代表数据库模式。
Physical data models are database specific and represent the database schema.
RDA可用于采取自下而上或自上而下的方式开发数据模型，允许分析已有数据库和通过对已有数据资产的反向工程开发数据模型。
RDA can be used to develop data models in either a top-down or bottom up manner, allowing analysis of existing databases and development of data models by reverse engineering of existing data assets.
假定我的应用程序中的数据都来自于数据库表中存储的各种值，我想让数据模型知道怎样对数据进行查找、排序、遍历和修改。
I wanted to make an assumption that the data in my application was just values from a table. I wanted my data model to know how to search, sort, traverse and modify that data.
例如，系统分析人员和设计人员创建和使用分析模型，数据库设计人员设计和查看数据模型。
For example, system analysts and designers create and use analysis models, and database designers design and view data models.
另外，当指定XML数据类型时，会向数据库用户公开这个数据模型。
Furthermore, this data model is exposed to database users when XML data type is specified.
还可以对实际数据库或数据定义语言(DDL)文件进行反向工程，生成物理数据模型。
Even still, with physical data models you can reverse engineer from the actual database or from the data definition language (DDL) file.
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