Installation and login of MySQL database

Digital age , With the increasing amount of data , To make our data more secure and easy to share , At the same time, in order to maintain the consistency of data information 、 integrity 、 Reduce data redundancy , We are increasingly inseparable from the database , Today, I share with you the very popular installation of life must learn （MySQL、PostgreSQL、Sqlite） One of the three databases mysql, In order to facilitate everyone to use and learn .

The contents of this article are all in win7 Middle drill .

One 、MySQL Database installation

1、 download MySQL Database software .

https://dev.mysql.com/downloads/mysql/

chart 1

2、 Installation and configuration

After downloading , We will zip Extract the package to the corresponding directory , Here I put the unzipped folder in C:\mysql-8.0.29 Next （ Please note the version number you downloaded ）.

To configure MySQL ：

Open the folder you just unzipped C:\mysql-8.0.29 , Create... Under this folder my.ini The configuration file , edit my.ini Configure the following basic information ：

[client]#  Set up mysql Client default character set default-character-set=utf8 [mysqld]#  Set up 3306 port port = 3306#  Set up mysql Installation directory basedir=C:\mysql-8.0.29-winx64#  Maximum connections allowed max_connections=20#  The character set used by the server defaults to 8 Bit coded latin1 Character set character-set-server=utf8#  The default storage engine that will be used when creating a new table default-storage-engine=INNODBbind-address = 0.0.0.0

start-up MySQL database ：

Open as administrator cmd Command line tools , Toggle directory ：

cd C:\web\mysql-8.0.11\bin

The key is coming.

Initialize database ：

mysqld --initialize --console

After execution , Will be output root User's initial default password , Here's the picture ：

chart 2

Note the string after the red box , That is the initialization password , Subsequent login needs to use , It is recommended to change the password after logging in .

Start installation command ：

mysqld install

start-up mysql service ：

net start mysql

thus ,mysql Installation complete .

Two 、 Sign in

1、 Command line login

Open Command Prompt , Enter a command in the following format , Enter the password , Pictured :

mysql -h HOSTNAME -u USERNAME -p

chart 3

Local login can be omitted HOSTNAME：

mysql-u wyj -p

2、 Log in using the database management software tool

We usually use database management tools to operate the database , Here we use more Navicat Premium, As for the installation, it will not be introduced in this issue .

First open the software , Click on the top left connection Icon , choice MySQL..., Fill in the corresponding information according to the prompt ,

chart 4

chart 5

Connection Name: You can write or not write at will .

Host: This machine can be filled in localhost, or 127.0.0.1

chart 6

After filling in , Click on Test Connection, Appear as shown in figure 6 The prompt message shown , That means the login is successful .

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