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Db4o

Db4o

Db4o

Db4o

2

This time , I 'll continue that theme -- the many options found in db4o -- with a look at how it handles refactoring .

这一次，我将继续这一主题 ——db4o 的众多选项 ——看看 db4o 如何处理重构。

3

The downside of this sort of operation is that db4o could accidentally truncate a value .

这种操作的缺点是，db4o 可能会意外地将一个值截尾。

4

Within the db4o system , it is trivial to open a second logical connection to the database , even when the database resides on the local disk .

在 db4o 系统中，打开第二个数据库逻辑连接非常简单，即使当数据库驻留在本地磁盘上时也是如此。

5

Get ready to learn how db4o supports application security, distribution, and transactions .

了解 db4o 如何支持应用程序安全性、分布和事务。

6

Actually , db4o's knack for backward-compatibility deserves a bit more explanation .

实际上，db4o 向后兼容的妙法值得解释一下。

7

Addressing this at a more granular level currently isn't an option in db4o, though other OODBMS systems may be more flexible .

目前 db4o 还不支持更加粒度化级别的解决方式，其他 OODBMS 系统可能更加灵活。

8

The key thing to remember is that you can build convenience methods on top of the db4o infrastructure to make it easier to use .

关键要记住可以在 db4o 基础架构之上构建方便的方法，从而使 db4o 更加易于使用。

9

In the last article in this series , I talked about the difference between querying an RDBMS and querying an object database like db4o.

在本系列的上一篇文章中，我谈到了查询 RDBMS 与查询像 db4o 这样的对象数据库的不同之处。

11

I demonstrated data retrieval using db4o's QBE engine last time , but I 'll quickly recap here .

上一次我使用了 db4o 的 QBE 引擎演示了数据检索，这里将快速回顾一下。

14

The solution is to encrypt the file , which in db4o is relatively straightforward .

解决方案是对文件进行加密，这在 db4o 中比较简单。

15

Before I do anything else , let 's see how db4o would respond to a query that looked for all the Brians in the database right now.

在做其它事情之前，我们先来看看 db4o 对查找数据库中所有 Brian 的查询如何作出响应。

16

In this article , you've seen some initial examples of adjusting complex code to account for db4o's object model .

在本文中，您看到了一些基本例子，通过调整复杂代码来实现 db4o 对象模型。

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Accordingly , when you call set , db4o knows to update the existing object rather than insert a new one.

相应地，当调用 set 时，db4o 将会更新现有的对象而不是插入新对象。

18

Download db4o: An open source native Java programming and . NET database .

下载 db4o ：一个开源的 Java 编程和 .NET 原生数据库。

19

Last month , I talked about querying db4o using both native and QBE-style queries .

上个月，我谈到了使用原生和 QBE 样式的查询来查询 db4o 。

20

InfoQ interviewed Nik Wekwerth of db4objects (db4o), about his view on the state of ODBMS and new features in the recent db4o release .

InfoQ 采访了 db4objects （db4o ）的 NikWekwerth ，以了解他对 ODBMS 形势的看法和最近发布的 db4o 的新特性。

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