Instructions for obtaining and setting up the world database may be obtained from the Resources section of this article.
有关获取和设置world数据库的指导，可以参考本文的参考资料部分。
The example MySQL world database: Obtain instructions for to download and install sample country, city, and language data.
MySQL数据库示例world：获取关于下载和安装示例国家、城市和语言数据的指导。
The examples in this article make use of MySQL's sample world database, which provides various pre-populated and linked tables containing city and country data.
本文中的例子使用MySQL的示例数据库world，其中包含了各种预填充的链接表，表中存储了城市数据和国家数据。
To dump a database definition of the MySQL world database in XML, fill up the form fields with appropriate access parameters for your MySQL server and submit it.
要以XML 格式转储MySQL数据库world的数据库定义，请使用 MYSQL服务器的正确访问参数填充表单字段并提交表单。
To better understand this, let's return to the world database and consider two of its tables, Country and City, which are linked to each other via the code foreign key.
为了更好地理解这一点，我们回到world数据库并考虑它的两个表Country和City，此二者通过code外键相互链接在一起。
Virtual world management component introduces scene graph to make an effective maintenance of virtual world database, state update message is used to keep the consistency in virtual world.
虚拟世界管理模块引入场景图分级结构来组织管理虚拟世界的模型数据，通过发送状态更新消息有效的维护了虚拟世界场景的一致性。
A Dutch scholar, Ruut Veenhoven, has created a World Database of Happiness, including national rankings.
荷兰学者，拉特维荷芬，创造了一个包括国家等级在内的世界幸福数据库。
The authorities at the World Database on Happiness have surveyed levels of happiness in different countries.
“世界幸福数据库”的专家调查了不同国家的快乐程度。
The authorities at the World Database on Happiness have surveyed levels of happiness in different countries.
“世界幸福数据库”的专家调查了不同国家的快乐程度。
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