Answers:
mysql-client- core-包含用于mysql数据库支持的核心客户端二进制文件，而
mysql- client- 取决于mysql-client-core并包含其他扩展功能和实用程序（用于ex perl支持）
现在我在Ubuntu12.04 LTS上使用mysql-client-5.5和mysql-client-core-5.5。
我输入了以下命令，并检索了结果。
dupingping@dupingping:~$ dpkg -L mysql-client-core-5.5
/.
/usr
/usr/share
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/mysqlcheck.1.gz
/usr/share/man/man1/mysql.1.gz
/usr/share/doc
/usr/share/doc/mysql-client-core-5.5
/usr/share/doc/mysql-client-core-5.5/copyright
/usr/share/doc/mysql-client-core-5.5/changelog.Debian.gz
/usr/bin
/usr/bin/mysqlcheck
/usr/bin/mysql
dupingping@dupingping:~$ dpkg -L mysql-client-5.5
/.
/usr
/usr/share
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/mysql_plugin.1.gz
/usr/share/man/man1/mysql_tableinfo.1.gz
/usr/share/man/man1/mysqlslap.1.gz
/usr/share/man/man1/mysqldumpslow.1.gz
/usr/share/man/man1/mysqlimport.1.gz
/usr/share/man/man1/mysqlman.1.gz
/usr/share/man/man1/innotop.1.gz
/usr/share/man/man1/mysqlreport.1.gz
/usr/share/man/man1/mysqlaccess.1.gz
/usr/share/man/man1/mysqladmin.1.gz
/usr/share/man/man1/mysql_find_rows.1.gz
/usr/share/man/man1/mysqlshow.1.gz
/usr/share/man/man1/mysql_client_test.1.gz
/usr/share/man/man1/mysqlbug.1.gz
/usr/share/man/man1/mysqldump.1.gz
/usr/share/man/man1/mysql_waitpid.1.gz
/usr/share/man/man1/myisam_ftdump.1.gz
/usr/share/man/man1/mysql_fix_extensions.1.gz
/usr/share/man/man1/mysql_client_test_embedded.1.gz
/usr/share/doc
/usr/share/doc/mysql-client-5.5
/usr/share/doc/mysql-client-5.5/README
/usr/share/doc/mysql-client-5.5/README.Debian
/usr/share/doc/mysql-client-5.5/copyright
/usr/bin
/usr/bin/mysql_waitpid
/usr/bin/mysqladmin
/usr/bin/mysql_plugin
/usr/bin/mysqlshow
/usr/bin/mysqldump
/usr/bin/myisam_ftdump
/usr/bin/mysql_find_rows
/usr/bin/mysqlimport
/usr/bin/mysqlslap
/usr/bin/mysqlbug
/usr/bin/innochecksum
/usr/bin/mysqlaccess
/usr/bin/mysql_client_test
/usr/bin/mysqldumpslow
/usr/bin/innotop
/usr/bin/mysql_fix_extensions
/usr/bin/mysqlreport
/usr/share/man/man1/mysqloptimize.1.gz
/usr/share/man/man1/mysqlrepair.1.gz
/usr/share/man/man1/mysqlanalyze.1.gz
/usr/share/doc/mysql-client-5.5/changelog.Debian.gz
/usr/bin/mysqloptimize
/usr/bin/mysqlanalyze
/usr/bin/mysqlrepair
如您所见，mysql-client软件包包括客户端二进制文件和其他工具innotop和mysqlreport，但是mysql-client-core仅包括核心客户端文件/usr/bin/mysql，/usr/bin/mysqlcheck。
关于mysql服务器。
这是一个空包，取决于MySQL维护者确定的mysql-server（当前为mysql-server-5.5）的当前“最佳”版本。（mysql-server）
该软件包包括服务器二进制文件，但不包含设置系统数据库所需的所有基础结构。（mysql-server-core）