MySQL introduction, detailed installation steps and usage | dark horse programmer

Catalog

One 、MySQL brief introduction

1、MySQL Introduction to

2、MySQL Characteristics

3、MySql Version of

Two 、MySQL Installation and use

1、 Installation mode

2、 Installation package download - Decompression version

Installation package download - Installed version

3、 Step installation

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One 、MySQL brief introduction

1、MySQL Introduction to

MySQL The database management system is developed by Sweden DataKonsultAB Company R & D , The company was Sun Company purchase , Now? Sun The company was again Oracle Company purchase , therefore MySQL At present belongs to the Oracle Its products .

MySQL What is used SQL Language is the most commonly used standardized language for accessing database .MySQL The software adopts a dual licensing policy , It is divided into community version and commercial version , Because of its small size 、 Fast 、 Low total cost of ownership , In general, small and medium-sized sites are chosen for development MySQL As website database .

2、MySQL Characteristics

①MySQL Database is used C and C++ language-written , To ensure the portability of the source code

② Support multiple operating systems, such as ：Windows、Linux、Mac OS wait

③ Multithreading support , Can make full use of CPU resources

④ Provides for multiple programming languages API, Include C Language ,Java,PHP.Python Language, etc.

⑤MySQL To optimize the SQL Algorithm , Effectively improve the query speed

⑥MySQL Open source and no copyright restrictions , Strong autonomy 、 Low use cost .

⑧MySQL Has a long history 、 The community and users are very active , Have a problem , You can get help quickly .

3、MySql Version of

For different users ,MySQL There are two different versions ：

• MySQL Community Server

Community version , free , however Mysql No official technical support .

• MySQL Enterprise Edition

Business Edition , This version is a paid version , You can try 30 God , Official technical support

• MySQL Cluster

Cluster version , Free open source , You can put a few MySQL Server Encapsulate into a Server.

• MySQL Cluster CGE

Advanced clustering , Pay for .

• MySQL Workbench（GUI TOOL）

One for MySQL The design of the ER/ Database modeling tools .MySQL Workbench It's divided into two versions , The community version （MySQL Workbench OSS）、 Commercial version （MySQL Workbench SE）.

MySQL The naming mechanism used by 3 A version number consisting of a number and a suffix . for example , image mysql-8.0.26 The version number of is explained in this way ：、

The first 1 A digital (8) It's the main version number , Describes the file format . All versions 5 All distributions of have the same file format .

The first 2 A digital (0) It's the release level . The main version number and release level are combined to form the release serial number .

The first 3 A digital (26) Is the version number of this release series , Increase with each new distribution .

at present ,My SQL The latest version of is MySQL 8.0.

Two 、MySQL Installation and use

1、 Installation mode

MySQL There are two ways to install the ：

Decompression configuration mode

Step installation method

2、 Installation package download - Decompression version

Download address ：Download MySQL Community Server (Archived Versions)

Installation package download - Installed version

Download address ：Download MySQL Installer (Archived Versions)

（1） Unzip package

take MySQL Unzip the package in a directory without Chinese and spaces

（2） Setup profile

Create... In the extracted directory my.ini File and add the following ：

（4） Configure system environment

• ① stay 【 My computer 】 Right click
• ② choice 【 Advanced system setup 】
• ③ choice 【 senior 】-》【 environment variable 】

（5） Configure system environment

take MYSQL_HOME Add to PATH environment variable

（6） Service operation

Enter with administrator privileges DOS, stay cmd in , Enter... In the unzip directory bin The directory executes the following commands in turn ：

① Yes mysql To initialize , Please note that , A temporary password will be produced here , Use this temporary password later

mysqld --initialize --user=mysql --console

② install mysql service

mysqld --install

③ start-up mysql service

net start mysql

④ Sign in mysql, Here you need to use the temporary password produced before

mysql -uroot –p

⑤ modify root User password

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY ‘123456’;

⑤ modify root User permissions

create user 'root'@'%' IDENTIFIED WITH mysql_native_password BY ‘123456';

3、 Step installation

Download address ：Download MySQL Installer (Archived Versions)

Follow the steps to install

After that, it can be installed according to the process , encounter `Next`（ next step ） Just click

Click on `Execute` Wait a few minutes after .

When all States become Complete after , Click on Next：

Remember to enter the password here , Used to log in the database later , It is recommended to set the password to ：123456.