Detailed tutorial on mysql installation and configuration (1)_MySQL
MySQL database is cross-platform and can run not only on Windows, but also on operating systems such as UNIX, Linux and Mac OS
1. Let’s briefly talk about the MySQL version:
According to the type of operating system, it can be divided into: Windows version, UNIX version, Linux version and Mac OS version
According to different user groups, it can be divided into: Community Edition and Enterprise Edition. The Community Edition is completely free, and the Enterprise Edition is charged
According to the release order, it can be divided into: 4.1, 5.0, 5.1, 5.4, 6.0 and other versions
According to the development status of MySQL, it is divided into: Alpha, Beta, Gamma and Generally Available (GA) versions
Several versions:
Alpha: A version under development and may have added features or modifications
Beta: The development has been basically completed and is in the testing stage, but has not been fully tested
Gamma: A Beta version that has been released for a period of time and is more stable than Beta
Generally Available (GA): the most stable version, which can be used in software development
Example:
mysql-essential-6.0.11-alpha-win32.msi
essential: This version contains necessary parts of MySQL and does not include uncommon parts
6: Major version number
0: Release level
11: The version number at this level (here is the 11th version at level 0)
alpha: version under development
win32: version running on 32-bit Windows
msi: format of installation file
The following introduces the installation configuration of Mysql under common systems Windows and Linux
2. Install and configure MySQL on Windows
There are two installation packages for MySQL on Windows: graphical interface installation and noinstall (noinstall)
There are also two optional packages for graphical interface installation: Windows Essentials and Windows MSI Installer
As mentioned above, Windows Essentials only contains the necessary parts of MySQL and does not include uncommon parts
Windows MSI Installer is a package that includes both commonly used and uncommon packages
I use the Essentials package as an example to install:
1> Double-click mysql-5.1.72-winx64.msi
2> Accept the agreement, next
3> Select "Custom", next
4> Click "Change..."
5> Modify the MySQL installation path and click "OK"
6> next
7> Click "Install"
8> next
9> next
10> Keep "Configure the MySQL Server now" selected and click "Finish"
11> next
12> Select “Detailed Configuration”, next
Detailed Configuration: Detailed configuration. If the database is used as the server of the enterprise, then select this option. If you practice by yourself, you can select "Standard Configuration"
Standard Configuration: Standard configuration
13> Select "Server Machine", next
Default is "Developer Machine"
Developer Machine: develop test classes, consume less resources
Server Machine: Server type, occupying more resources
Dedicated MySQL Server Machine: Dedicated database server type, accounting for all available resources
14> Select "Transactional Database Only", next
Default is "Multifunctional Database"
Multifunctional Database: Universal
Transactional Database Only: Transaction processing type, suitable for transaction processing type application services such as web, with good support for InnoDB engine
Non-Transactional Database Only: Non-transactional, relatively simple, mainly used for monitoring and counting applications, with good support for the MyISAM engine
15> Select the path to store the InnoDB table space data file, the default is "Installation Path (installation path)", next
16> Set the number of concurrent connections, I chose the second "Online Transaction Processing (OLTP)"
Decision Support (DSS)/OLAP: supports 20 concurrent connections
Online Transaction Processing (OLTP): can support 500 concurrent connections
Manual Setting: Manually specify the number of concurrency, the default is 15
17> Whether to enable TCP/IP connection, enabled by default , set the MySQL port, the default is "3306", check Add the port to the firewall policy, whether to enable it Strict mode, if turned on, the database will filter the data more strictly and will not allow any grammatical and other errors, improving the accuracy of the data
18> Character set settings, I selected the third "Manual Selected Default Character Set/ Collation", selected the character set as "gbk", next
Standard Character Set: The default character set is Latin1, suitable for English and Western European languages
Best Support For Multilingualism: The default character set is UTF8
Manual Selected Default Character Set/ Collation: Manually select the character set, select gbk or gb2312. The difference between the two is: gbk font has a large capacity, including gb2312
19> Select whether to install mysql as a windows service , checked by default, Service Name sets the service name, the default is: MySQL, checked "Launch the MySQL Server automatically" and "Include Bin Directory in Windows PATH", next Launch the MySQL Server automatically: Whether to set the startup include Bin Directory in Windows PATH: Add the MySQL application directory to the PATH of the Windows system so that it can be launched directly in the DOS window Access MySQL without going to MySQL’s bin directory
20> Set the password for the MySQL super user root and whether to create an anonymous user, uncheck "Create An Anonymous Account", next
21> Click "Execute"
22> Click “Finish” to complete the installation
There are several common mistakes in the last step. For details, see:
Solving the problem of Cannot create windows service for mysql.error:0 when installing MySQL5.1
How to solve the problem of could not start the service mysql error:0 when MySQL is installed and reinstalled
The above is the entire content of the mysql installation and configuration method. I hope it will be helpful to everyone's learning, and I hope you will support me a lot.

MySQLoffersvariousstorageengines,eachsuitedfordifferentusecases:1)InnoDBisidealforapplicationsneedingACIDcomplianceandhighconcurrency,supportingtransactionsandforeignkeys.2)MyISAMisbestforread-heavyworkloads,lackingtransactionsupport.3)Memoryengineis

Common security vulnerabilities in MySQL include SQL injection, weak passwords, improper permission configuration, and unupdated software. 1. SQL injection can be prevented by using preprocessing statements. 2. Weak passwords can be avoided by forcibly using strong password strategies. 3. Improper permission configuration can be resolved through regular review and adjustment of user permissions. 4. Unupdated software can be patched by regularly checking and updating the MySQL version.

Identifying slow queries in MySQL can be achieved by enabling slow query logs and setting thresholds. 1. Enable slow query logs and set thresholds. 2. View and analyze slow query log files, and use tools such as mysqldumpslow or pt-query-digest for in-depth analysis. 3. Optimizing slow queries can be achieved through index optimization, query rewriting and avoiding the use of SELECT*.

To monitor the health and performance of MySQL servers, you should pay attention to system health, performance metrics and query execution. 1) Monitor system health: Use top, htop or SHOWGLOBALSTATUS commands to view CPU, memory, disk I/O and network activities. 2) Track performance indicators: monitor key indicators such as query number per second, average query time and cache hit rate. 3) Ensure query execution optimization: Enable slow query logs, record and optimize queries whose execution time exceeds the set threshold.

The main difference between MySQL and MariaDB is performance, functionality and license: 1. MySQL is developed by Oracle, and MariaDB is its fork. 2. MariaDB may perform better in high load environments. 3.MariaDB provides more storage engines and functions. 4.MySQL adopts a dual license, and MariaDB is completely open source. The existing infrastructure, performance requirements, functional requirements and license costs should be taken into account when choosing.

MySQL uses a GPL license. 1) The GPL license allows the free use, modification and distribution of MySQL, but the modified distribution must comply with GPL. 2) Commercial licenses can avoid public modifications and are suitable for commercial applications that require confidentiality.

The situations when choosing InnoDB instead of MyISAM include: 1) transaction support, 2) high concurrency environment, 3) high data consistency; conversely, the situation when choosing MyISAM includes: 1) mainly read operations, 2) no transaction support is required. InnoDB is suitable for applications that require high data consistency and transaction processing, such as e-commerce platforms, while MyISAM is suitable for read-intensive and transaction-free applications such as blog systems.

In MySQL, the function of foreign keys is to establish the relationship between tables and ensure the consistency and integrity of the data. Foreign keys maintain the effectiveness of data through reference integrity checks and cascading operations. Pay attention to performance optimization and avoid common errors when using them.


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