1. Install and uninstall MySQL. 1. Install and uninstall MySQL.

1. Install and uninstall MySQL. 1. Install and uninstall MySQL.
1. What is a database? Commonly known as the data warehouse, convenient data management software (or programs) 2. MySQL entry

1. Download from the official website

2. Install MySql

Double-click the installation button, but note that the installation directory cannot contain Chinese characters.

2.1 verify that the installation is successful

Open the command line --> enter "mysql-u root-p" and press Enter. enter the password --> press ENTER

If the following message is displayed, the operation is successful.

C: \ Users \ Administrator> mysql-u root-p
Enter password :******
Welcome to the MySQL monitor. Commands end with; or \ g.
Your MySQL connection id is 2
Server version: 5.5.30 MySQL Community Server (GPL)

Copyright (c) 2000,201 3, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
Affiliates. Other names may be trademarks of their respective
Owners.

Type 'help; 'or' \ H' for help. type' \ C' to clear the current input statement.

Mysql>

3. uninstall MySQL (taking Win7 as an example)

A. Stop the MySQL service of window.

Find "Control Panel" --> "management tool" --> "service" to stop the MySQL background service.

B. Uninstall the MySQL Installer

"Control Panel" --> "programs and functions", uninstall MySQL programs

C. Delete all files in the MySQL installation directory.

D. Delete the MySQL directory in the hidden directory of the C drive ProgramData.

ProgramData: This is a hidden directory under drive C. Open the "show hidden files" function and you can find it.

Delete it.