After downloading the MySQL package that suits your needs and before attempting to install it, make sure that it is intact and has not been tampered with. There are three means of integrity checking:下载适合您需求的MySQL包后，在尝试安装之前，请确保它完好无损，没有被篡改。完整性检查有三种方法：
MD5 checksumsMD5校验和
Cryptographic signatures using 使用GNU隐私保护GnuPG, the GNU Privacy GuardGnuPG的加密签名
For RPM packages, the built-in RPM integrity verification mechanism对于RPM包，内置的RPM完整性验证机制
The following sections describe how to use these methods.以下各节介绍如何使用这些方法。
If you notice that the MD5 checksum or GPG signatures do not match, first try to download the respective package one more time, perhaps from another mirror site.如果您注意到MD5校验和或GPG签名不匹配，请尝试再次下载相应的包，可能是从另一个镜像站点下载。