MySQL数据库学习笔记(一)—-MySQL 5.6.21的装置和安排(setup版)

【声明】 

欢迎转载,但请保留小说原来出处→_→ 

生命壹号:http://www.cnblogs.com/smyhvae/

小说来源:http://www.cnblogs.com/smyhvae/p/4026782.html

 

【正文】

【开发条件】

物理机版本:Win 7旗舰版(64位)

MySQL版本:5.5.40MSI版(64位)

一、数据库类型:

(1)关系数据库

(2)面向对象数据库

(3)XML数据库

前几日的主流是关系型数据库。

 

二、数据库产品:

  • 巨型数据库有:Oracle、Sybase、DB2、SQL server
  • 袖珍数据库有:MySQL、Access等

地方列举的数据库都是关系型数据库,只是Oracle中有一小部分是面向对象的。MySQL具有开源、免费等特点,适合中小型公司的支付。

 

三、关系型数据库的基本概念:

关系型数据库是由五个表(table)和表之间的涉及关系结合的数量的汇集,表是一个由若干行、若干列组成的二维的关系结构。

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上图中,表的列称为字段(field),表的行成为记录(record)。字段是表的布局,记录是表的数量。

四、MySQL的下载:

官网下载地址:http://www.mysql.com/

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上图中,可以看看MySQL有多少个本子:公司版、集群版、社区版。社区版就是我们所需要的本子,GPL是一种开源的商谈。点击上图中红框中的链接,进入其它一个界面:

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上图中,大家选拔红框部分的社区版本举办下载,弹出如下界面:

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下图中,可以看出MySQL援助广大阳台:

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自我的操作系统是64位的,我采取相应版本(MSI版)举办下载,点击上图中红框部分的链接,进入如下界面:

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上图中,点击红框部分进行下载,弹出如下界面:

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上图中,咱们不需要注册,点击红框部分,直接下载即可。

 

五、MySQL的安装:

双击安装包时,出现了这么些似是而非:

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可以吗,没悟出官网下载的软件都能出问题。算了,我或者下老版本的吧。

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点击上图中红框部分,弹出如下界面:

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上图中,点击红框部分,弹出如下界面:

图片 12

不用登记,间接下载吧。。。

 

五、MySQL的安装:

软件下载完成后,就先河设置吧。

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上图中,提议选拔第二项的Custom,自定义安装。弹出如下界面:

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上图中,采纳适当的安装路径,点击“继续”:

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尔后跳出另一个会话框,是让我们设置一个可视化的工具:

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上图中,大家勾选红框部分,然后点击“finish”,举办安排。

 

六、MySQL的配置:

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上图的讲演:今后在Java开发中,要对这多少个服务器举行访问,就要涉及到通信的商议,这里运用TCP/IP协议,此时就事关到了端口,MySQL默认的端口号为3306,使用默认的即可。继续下一步:

图片 29

 

上图中,是选用数据库的编码。第一种是拉丁文,只协助英文,不扶助普通话;第两种貌似是和阿尔巴尼亚语有关的。这里大家选用第两种:自定义。然后将编码模式设置为:utf-8。下一步:

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上图中,大家勾选“路径添加到环境变量”,然后继续:

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上图中,是给root用户安装密码。这里,我将密码设置为smyh。此外,勾选“允许用户远程(网路)访问”,否则只可以在地头访问,继续:

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下边的勾会自动打的:

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上图中,可以看到,我们的安排被写在了my.ini这个文件中了。

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点击finish,完成安装。我们再到相应目录下看一下my.ini文件的内容:

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# MySQL Server Instance Configuration File
# ----------------------------------------------------------------------
# Generated by the MySQL Server Instance Configuration Wizard
#
#
# Installation Instructions
# ----------------------------------------------------------------------
#
# On Linux you can copy this file to /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options
# (@localstatedir@ for this installation) or to
# ~/.my.cnf to set user-specific options.
#
# On Windows you should keep this file in the installation directory 
# of your server (e.g. C:\Program Files\MySQL\MySQL Server X.Y). To
# make sure the server reads the config file use the startup option 
# "--defaults-file". 
#
# To run run the server from the command line, execute this in a 
# command line shell, e.g.
# mysqld --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini"
#
# To install the server as a Windows service manually, execute this in a 
# command line shell, e.g.
# mysqld --install MySQLXY --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini"
#
# And then execute this in a command line shell to start the server, e.g.
# net start MySQLXY
#
#
# Guildlines for editing this file
# ----------------------------------------------------------------------
#
# In this file, you can use all long options that the program supports.
# If you want to know the options a program supports, start the program
# with the "--help" option.
#
# More detailed information about the individual options can also be
# found in the manual.
#
#
# CLIENT SECTION
# ----------------------------------------------------------------------
#
# The following options will be read by MySQL client applications.
# Note that only client applications shipped by MySQL are guaranteed
# to read this section. If you want your own MySQL client program to
# honor these values, you need to specify it as an option during the
# MySQL client library initialization.
#
[client]
port=3306
[mysql]
default-character-set=utf8
# SERVER SECTION
# ----------------------------------------------------------------------
#
# The following options will be read by the MySQL Server. Make sure that
# you have installed the server correctly (see above) so it reads this 
# file.
#
[mysqld]
# The TCP/IP Port the MySQL Server will listen on
port=3306
#Path to installation directory. All paths are usually resolved relative to this.
basedir="D:/MySQL/MySQL Server 5.5/"
#Path to the database root
datadir="C:/ProgramData/MySQL/MySQL Server 5.5/Data/"
# The default character set that will be used when a new schema or table is
# created and no character set is defined
character-set-server=utf8
# The default storage engine that will be used when create new tables when
default-storage-engine=INNODB
# Set the SQL mode to strict
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
# The maximum amount of concurrent sessions the MySQL server will
# allow. One of these connections will be reserved for a user with
# SUPER privileges to allow the administrator to login even if the
# connection limit has been reached.
max_connections=100
# Query cache is used to cache SELECT results and later return them
# without actual executing the same query once again. Having the query
# cache enabled may result in significant speed improvements, if your
# have a lot of identical queries and rarely changing tables. See the
# "Qcache_lowmem_prunes" status variable to check if the current value
# is high enough for your load.
# Note: In case your tables change very often or if your queries are
# textually different every time, the query cache may result in a
# slowdown instead of a performance improvement.
query_cache_size=0
# The number of open tables for all threads. Increasing this value
# increases the number of file descriptors that mysqld requires.
# Therefore you have to make sure to set the amount of open files
# allowed to at least 4096 in the variable "open-files-limit" in
# section [mysqld_safe]
table_cache=256
# Maximum size for internal (in-memory) temporary tables. If a table
# grows larger than this value, it is automatically converted to disk
# based table This limitation is for a single table. There can be many
# of them.
tmp_table_size=34M
# How many threads we should keep in a cache for reuse. When a client
# disconnects, the client's threads are put in the cache if there aren't
# more than thread_cache_size threads from before.  This greatly reduces
# the amount of thread creations needed if you have a lot of new
# connections. (Normally this doesn't give a notable performance
# improvement if you have a good thread implementation.)
thread_cache_size=8
#*** MyISAM Specific options
# The maximum size of the temporary file MySQL is allowed to use while
# recreating the index (during REPAIR, ALTER TABLE or LOAD DATA INFILE.
# If the file-size would be bigger than this, the index will be created
# through the key cache (which is slower).
myisam_max_sort_file_size=100G
# If the temporary file used for fast index creation would be bigger
# than using the key cache by the amount specified here, then prefer the
# key cache method.  This is mainly used to force long character keys in
# large tables to use the slower key cache method to create the index.
myisam_sort_buffer_size=68M
# Size of the Key Buffer, used to cache index blocks for MyISAM tables.
# Do not set it larger than 30% of your available memory, as some memory
# is also required by the OS to cache rows. Even if you're not using
# MyISAM tables, you should still set it to 8-64M as it will also be
# used for internal temporary disk tables.
key_buffer_size=55M
# Size of the buffer used for doing full table scans of MyISAM tables.
# Allocated per thread, if a full scan is needed.
read_buffer_size=64K
read_rnd_buffer_size=256K
# This buffer is allocated when MySQL needs to rebuild the index in
# REPAIR, OPTIMZE, ALTER table statements as well as in LOAD DATA INFILE
# into an empty table. It is allocated per thread so be careful with
# large settings.
sort_buffer_size=256K
#*** INNODB Specific options ***
# Use this option if you have a MySQL server with InnoDB support enabled
# but you do not plan to use it. This will save memory and disk space
# and speed up some things.
#skip-innodb
# Additional memory pool that is used by InnoDB to store metadata
# information.  If InnoDB requires more memory for this purpose it will
# start to allocate it from the OS.  As this is fast enough on most
# recent operating systems, you normally do not need to change this
# value. SHOW INNODB STATUS will display the current amount used.
innodb_additional_mem_pool_size=3M
# If set to 1, InnoDB will flush (fsync) the transaction logs to the
# disk at each commit, which offers full ACID behavior. If you are
# willing to compromise this safety, and you are running small
# transactions, you may set this to 0 or 2 to reduce disk I/O to the
# logs. Value 0 means that the log is only written to the log file and
# the log file flushed to disk approximately once per second. Value 2
# means the log is written to the log file at each commit, but the log
# file is only flushed to disk approximately once per second.
innodb_flush_log_at_trx_commit=1
# The size of the buffer InnoDB uses for buffering log data. As soon as
# it is full, InnoDB will have to flush it to disk. As it is flushed
# once per second anyway, it does not make sense to have it very large
# (even with long transactions).
innodb_log_buffer_size=2M
# InnoDB, unlike MyISAM, uses a buffer pool to cache both indexes and
# row data. The bigger you set this the less disk I/O is needed to
# access data in tables. On a dedicated database server you may set this
# parameter up to 80% of the machine physical memory size. Do not set it
# too large, though, because competition of the physical memory may
# cause paging in the operating system.  Note that on 32bit systems you
# might be limited to 2-3.5G of user level memory per process, so do not
# set it too high.
innodb_buffer_pool_size=106M
# Size of each log file in a log group. You should set the combined size
# of log files to about 25%-100% of your buffer pool size to avoid
# unneeded buffer pool flush activity on log file overwrite. However,
# note that a larger logfile size will increase the time needed for the
# recovery process.
innodb_log_file_size=53M
# Number of threads allowed inside the InnoDB kernel. The optimal value
# depends highly on the application, hardware as well as the OS
# scheduler properties. A too high value may lead to thread thrashing.
innodb_thread_concurrency=8

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而且,大家在起始菜单的次序中也能观看已经安装好的次第了:

图片 37

点击它,起初运行:

图片 38

开辟”总计机管理“可以见到MySQL的服务已开行:

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并且在过程中也可以看来:

图片 40

 

五、MySQL的卸载:

1、到控制面板里面先把mysql软件删除;

2、删除mysql的设置目录(假诺在此外盘还有设置目录也要去除,空目录也要去除);

3、删除注册表中的以下文件:(按”Win+R”键,输入regedit,进入注册表):

  • HKEY_LOCAL_MACHINE/SYSTEM/ControlSet001/Services/Eventlog/Applications/MySQL
  • HKEY_LOCAL_MACHINE/SYSTEM/ControlSet002/Services/Eventlog/Applications/MySQL
  • HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Eventlog/Applications/MySQL

有些话全体剔除(技巧:用F3循环查找“mysql”);

4、假诺是windows 7
系统,还索要找到C:\ProgramData\MYSQL将其除去;假诺是XP系统,删除找到C:\Documents
and Settings\All Users\Application Data\MYSQL

成功后即可再度安装,不需要重启系统。

 

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