Table of Contents目录
The MySQL™ software delivers a very fast, multithreaded, multi-user, and robust SQL (Structured Query Language) database server. MySQL™软件提供了一个非常快速、多线程、多用户和健壮的SQL（结构化查询语言）数据库服务器。MySQL Server is intended for mission-critical, heavy-load production systems as well as for embedding into mass-deployed software. MySQL服务器适用于任务关键型、重负载生产系统以及嵌入到大规模部署的软件中。Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Oracle是Oracle Corporation和/或其附属公司的注册商标。MySQL is a trademark of Oracle Corporation and/or its affiliates, and shall not be used by Customer without Oracle's express written authorization. MySQL是Oracle Corporation和/或其附属公司的商标，未经Oracle明确书面授权，客户不得使用MySQL。Other names may be trademarks of their respective owners.其他名称可能是其各自所有者的商标。
The MySQL software is Dual Licensed. MySQL软件是双重许可的。Users can choose to use the MySQL software as an Open Source product under the terms of the GNU General Public License (http://www.fsf.org/licenses/) or can purchase a standard commercial license from Oracle. 用户可以根据GNU通用公共许可证的条款选择将MySQL软件作为开源产品使用（http://www.fsf.org/licenses/）或者可以从Oracle购买标准商业许可证。See http://www.mysql.com/company/legal/licensing/ for more information on our licensing policies.请参阅http://www.mysql.com/company/legal/licensing/以了解有关我们的许可政策的更多信息。
The following list describes some sections of particular interest in this manual:以下列表描述了本手册中特别感兴趣的部分：
For a discussion of MySQL Database Server capabilities, see Section 1.2.2, “The Main Features of MySQL”.有关MySQL数据库服务器功能的讨论，请参阅第1.2.2节，“MySQL的主要特性”。
For an overview of new MySQL features, see Section 1.3, “What Is New in MySQL 8.0”. 有关MySQL新特性的概述，请参阅第1.3节，“MySQL8.0的新增功能”。For information about the changes in each version, see the Release Notes.有关每个版本中更改的信息，请参阅发行说明。
For installation instructions, see Chapter 2, Installing and Upgrading MySQL. 有关安装说明，请参阅第2章，安装和升级MySQL。For information about upgrading MySQL, see Section 2.11, “Upgrading MySQL”.有关升级MySQL的信息，请参阅第2.11节，“升级MySQL”。
For a tutorial introduction to the MySQL Database Server, see Chapter 3, Tutorial.有关MySQL数据库服务器的教程介绍，请参阅第3章，教程。
For information about configuring and administering MySQL Server, see Chapter 5, MySQL Server Administration.有关配置和管理MySQL Server的信息，请参阅第5章，MySQL Server管理。
For information about security in MySQL, see Chapter 6, Security.有关MySQL中安全性的信息，请参阅第6章，安全性。
For information about setting up replication servers, see Chapter 17, Replication.有关设置复制服务器的信息，请参阅第17章，复制。
For information about MySQL Enterprise, the commercial MySQL release with advanced features and management tools, see Chapter 30, MySQL Enterprise Edition.有关MySQL企业版的信息，请参阅第30章，MySQL企业版，MySQL企业版是一个具有高级功能和管理工具的商业MySQL版本。
For answers to a number of questions that are often asked concerning the MySQL Database Server and its capabilities, see Appendix A, MySQL 8.0 Frequently Asked Questions.有关MySQL数据库服务器及其功能的一些常见问题的答案，请参阅附录A，MySQL 8.0常见问题解答。
For a history of new features and bug fixes, see the Release Notes.有关新功能和错误修复的历史记录，请参阅发行说明。
To report problems or bugs, please use the instructions at Section 1.6, “How to Report Bugs or Problems”. 要报告问题或错误，请使用第1.6节，“如何报告错误或问题”中的说明。If you find a security bug in MySQL Server, please let us know immediately by sending an email message to 如果您在MySQL服务器中发现安全漏洞，请立即发送电子邮件到<secalert_us@oracle.com>. <secalert_us@oracle.com>以通知我们。Exception: Support customers should report all problems, including security bugs, to Oracle Support.例外：支持客户应向Oracle支持部门报告所有问题，包括安全漏洞。