A fully relational database schema would require hundreds of tables to represent PDBML.
一个纯关系型的数据库模式将需要数百个表来表示PDBML。
Such a relational database schema for the PDB was developed in 2005 and is shown in Figure 2.
在 2005 年，曾经为PDB开发过这样的一个关系数据库模式，如图 2 所示。
Two algorithms to compute the candidate keys of a relational database schema are given in this paper.
本文介绍了求解一个关系模式的候选码的两种算法。
So why were the relational database schema center (6) and so many other database-related plug-ins activated?
而为什么关系数据库模式中心(6)和那么多其他数据库相关的插件被激活了？
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。
The previous article discussed how Application Server and Application Developer use an XML file called Schema.dbxmi to represent a relational database schema that is mapped to an EJB design.
上篇文章讨论了ApplicationServer和Application Developer如何使用称为schema . dbxmi的XML文件来表示映射到EJB设计的关系数据库模式。
Create a Relational DAS instance: an important aspect of creating the Relational DAS is describing the database schema it should use.
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。
In some cases, the underlying service will be a relational database with schema support.
在一些用例中，基本的服务是有着模式支持的相关数据库。
The Entity Framework also includes a powerful mapping engine that allows developers to map the EDM schema to a relational database for actual storage.
NET实体框架还提供了一个强大的映射机制，让开发者能够很容易 地将EDM架构和实际的关系型数据库映射起来。
This task involves defining the database schema (tables, columns) to store XML data in a relational database.
这一任务涉及定义数据库模式(表、列)，来在关系数据库中存储XML数据。
In a nutshell, you open the XML schema file, establish a database connection, and then use the mouse to draw connections from XML elements and attributes to relational columns.
概括起来，就是打开XML模式文件，建立一个数据库连接，然后用鼠标画出从xml元素和属性到关系列之间的连接。
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。
These recommendations address the database schema, the choice between XML and relational storage, definition of indexes, and physical data organization with partitioning and clustering options.
这些建议涉及了数据库模式、XML与关系存储之间的选择、索引的定义以及带有分区和集群选项的物理数据组织。
Figure 7 illustrates the star schema in the relational database.
图7描述了关系数据库中的星型模式。
Figure 2 illustrates the star schema in the relational database.
图2演示了关系数据库中的星形模式。
Now for the other big difference between the ZODB and a relational database: ZODB objects completely lack any schema specification.
下面讨论一下ZODB和关系数据库之间的其他主要区别：ZODB对象完全缺乏任何模式规范。
When you expand the database schema model you can see the relational tables and columns.
在展开数据库模式模型时，可以看到关系表和列。
This annotated schema is then loaded into the database and used to transform incoming XML into the defined relational columns.
然后将这一带注释的模式加载到数据库中，并用于将进入的XML转化为所定义的关系列。
We have tried to keep the purchase order table schema simple in the relational-only database by storing the purchase order document as a BLOB.
我们已经通过将采购订单文档存储为 BLOB，在基本关系数据库中尽量保持采购订单表模式简单。
In this case, the source would be your relational database and the target would be an XML schema definition (XSD) document that contains the structure of the XML document.
在这个示例中，源是您的关系数据库，目标是一个包含XML文档结构的XML模式定义(XSD)文档。
If the data was stored in the database in a relational schema, your queries to the database would become more complex.
如果数据在数据库中存储为关系形式，对数据库的查询会变得更复杂。
From this point on, you don't have to worry about SQL or any particular database because your code can be expressed in terms of the abstract relational schema.
因此，不必担心SQL或任何特殊数据库，因为代码可以按照抽象关系模式来表示。
This requires a fixed mapping from the expected XML structure to a collection of relational tables in your database schema.
这需要从预期的XML结构到数据库模式中的关系表集合的固定映射。
The most important thing you can do when you design a native XML database schema is to avoid the temptation to normalize the data in the same way that you do when you design a relational database.
设计原生XML数据库模式时，最重要的事情是避免使用设计关系数据库时采用的方法来规格化数据。
Therefore, Python programmers who want to use a relational database generally find they have imposed upon themselves the extra and unnecessary discipline of providing a schema for each of their types.
因此，希望使用关系数据库的Python程序员一般会发现，他们在自己身上强加了额外和不必要的规则，也就是为自己的每个类型提供模式。
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。
A relational database structure in which data is maintained in a single fact table at the center of the schema with additional dimension data stored in dimension tables.
数据保存在架构中心的单个事实数据表中而其他维度数据存储在维度表中的一种关系数据库结构。
Optimization of relational schema is very important and difficult to design a database system, the ultimate goal of optimization is to construct a good relational schema for database system.
关系模式优化是关系数据库系统设计中的一个重点和难点，优化的最终目的是建立一个良好的关系模式。
The formal definitions of OWL ontology and relational database(RDB) schema were given.
给出了OWL本体和关系数据库模式的形式定义；
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。
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