Little training is needed to learn JDO.
学习JDO只需很少的培训。
JDO objects cannot be accessed directly by a J2EE client.
J2EE客户机不能直接访问jdo对象。
Entity beans and JDO share the following characteristics.
实体bean和JDO都有以下特征。
What JDO lacks in best practices it makes up for in simplicity.
对于在最佳实践方面的不足，JDO用简单性来弥补。
JDO and entity beans are both based on a vendor-neutral standard.
JDO和实体bean都基于与供应商无关的标准。
Support for basic JDOQL querying of objects stored in LDAP via JDO.
支持通过JDO对存储在LDAP中的对象进行基本JDOQL查询。
JDO does not require the application to provide any explicit mappings.
JDO并不需要程序去提供任何显式的映射。
JDO has also adopted much of the high-level architecture used by JDBC.
JDO还采用了很多JDBC使用的高级体系结构。
The JDO examples provide a one-to-one representation of tables to objects.
JDO示例提供了表到对象的一对一表示。
Present JDO technical specification is researched and discussed in this paper.
本论文对目前的JDO技术规范进行了研究和探讨。
JDO reduces release cycles and increases software quality for persistence code.
JDO可以缩短发布周期，并提高持久性代码的软件质量。
Org.acme.membership.domain, which holds the JDO enhanced business domain classes.
它含有JDO增强的业务域类。
Support for basic JDOQL querying of objects stored in LDAP via JDO, utilizing JAXB.
支持通过JDO对存储在LDAP中的对象进行基本JDOQL查询，这利用了JAXB。
Essentially, PersistenceManager is the main interface to the JDO persistence system.
基本上，PersistenceManager是JDO持久性系统的主接口。
JDO isn't quite as popular as it was a few years ago, but it's still a nice feature to have.
尽管不再像前几年那么流行，JDO仍然是一个不错的功能。
JPOX has been chosen by Sun to be the reference implementation for the JDO 2.0 specification.
JPOX已经被Sun选作JDO 2.0规范的参考实现。
Castor JDO is just one of many data-binding solutions available in the open source world today.
Castorjdo只不过是当今开放源码世界中许多可用数据绑定解决方案中的一种。
When deciding between entity beans and JDO, consider the following pros and cons for each technology.
在确定采用实体bean还是采用JDO时，请考虑这两种技术的以下优缺点。
An application written using the Google Eclipse Plugin already has all the libraries it needs to use JDO.
使用GoogleEclipsePlugin编写的应用程序已经拥有了使用JDO所需的所有库。
This is where you can start to see how JDO allows you to handle persistence in an object-oriented fashion.
从这里开始可以看到JDO如何允许您以面向对象的方式来处理持久性。
While these numbers don't suggest that JDO is a bad technology, they do suggest it's still on the cutting edge.
尽管这些数据并不表示JDO是一种差劲的技术，但它们确实表明它还处于前沿。
You can think of JPA as the successor to well-known transparent persistence technologies such as JDO and Hibernate.
您可以把JPA看作是众所周知的透明持久性技术(如jdo和Hibernate)的继承者。
Initially released in December 1999, Castor JDO was one of the first open source data binding frameworks available.
CastorJDO最早发布于1999年12月，它是第一批可用的开放源码数据绑定框架之一。
Listing 3 shows the ContactDAO interface extended to use the JDO API to persist, query, update, and delete objects.
清单3显示扩展后的ContactDAO接口，可使用JDOAPI进行持久化、查询、更新和删除对象。
Castor comes with some JDO examples that present a data model and an object model surrounding the notion of a product.
Castor附带了一些JDO示例，它们给出了围绕某个产品概念的数据模型和对象模型。
So, although JDO objects can easily be declared as transactional, they must still be accessed using non-transactional components.
因此，尽管很容易将JDO对象声明为事务性的，但仍必须使用非事务性组件来访问它们。
That can make for a lot of confusion, so it should be said again: if you use Castor's JDO, you're not using the Sun-standard API.
鉴于可能造成很大混淆，再强调一次：如果使用Castor 的JDO，那么它不是Sun 的标准API。
JDO USES the PersistenceManager to manage the transactions, whereas entity beans delegate transaction management to the EJB container.
JDO使用PersistenceManager管理事务，而实体bean将事务管理委派给了ejb容器。
Data storage is based on BigTable, but with JDO and JPA interfaces that allow you to write code that is not directly tied to BigTable.
数据存储的基础是BigTable，但是使用的是JDO和JPA接口，这些接口允许您编写没有直接绑定到BigTable的代码。
Since JDO is still a rather new technology (the youngest of J2EE's persistence solutions), we'll start with an overview of how it works.
由于JDO仍是一种相当新的技术(最新的J2EE持久性解决方案)，所以我们将首先概述其工作原理。
应用推荐