


Version selection
Because there are more and more versions of MySql, and small and medium-sized website owners may not have enough money to buy the commercial version, so they generally choose the free version, and the functions are sufficient.
If you have money, download the enterprise version if you want, haha.
Currently the most used version is mysql installer community, which is called the community version and is also a free version.
Download MySql
1. Go to the mysql official website to download, and you can choose the corresponding version to download. Recommended
2. Search and download through the search engine, and find a trusted resource site to download the corresponding version.
The latest community version I chose here is mysql installer community-5.6.22.0. The following tutorials are based on this version.
Installation starts
Double-click the downloaded mysql installer community-5.6.22.0 icon,
Installation protocol interface
Check "I accept the lincese terms" and click "Next",
The meaning of each setting in the installation type interface:
Developer Default: Installed by default.
Server only: The public server is the database server.
Client only: The public is the client.
Full: completely safe type.
Custom: Custom installation
Here we select "Custom" to customize the installation,
Select products and features interface,
You can click the "Filter" input box to pop up the product selection box,
Select the "MySql Servers" option in "Category", and for "Architecture" you can select "Any" or one of them. I chose "64-bit" here,
I only installed the most important MySql Server 5.6.22 service, and there are no other options.
You can also directly install all functions by default.
"Install Directory": refers to the installation path,
"Data Directory": refers to the database file path,
It is recommended to choose non-system disk.
Click “Execute” to install
Installation successful. Click "Next" to proceed to the next step,
Click "Next" to enter the configuration interface,
Configuration type, I chose "Server Machine" here, which is used as a dedicated database server,
Just use the default 3306 for the TCP/IP port.
Set a default password with a minimum length of 4 characters and the default administrator is root.
You can also add users specifically and assign different permissions according to different roles.
Installed as a system service and started when the system starts.
Start configuration,
Configuration completed.
At this point, the installation of Mysql has been completed. Let's try it first to see if we can connect to the database.
Mysql has a connection tool installed by default called "MySQL 5.6 Command Line Client", which can be used to connect to the database.
Open the "Start" menu and open "MySQL 5.6 Command Line Client",
Enter the administrator password we set during installation,
If you see the above interface, it means the installation has been successful. The connection id, version number and copyright of mysql are displayed on the surface.
Okay, now you can officially start your MySql journey.
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The script editor added:
Of course, after installing the mysql database, it is best to let mysql run as a normal user with elevated rights.
For configuration optimization of mysql 5.6, please refer to this article: http://www.bitsCN.com/article/84357.htm

InnoDBBufferPool reduces disk I/O by caching data and indexing pages, improving database performance. Its working principle includes: 1. Data reading: Read data from BufferPool; 2. Data writing: After modifying the data, write to BufferPool and refresh it to disk regularly; 3. Cache management: Use the LRU algorithm to manage cache pages; 4. Reading mechanism: Load adjacent data pages in advance. By sizing the BufferPool and using multiple instances, database performance can be optimized.

Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

MySQL is worth learning because it is a powerful open source database management system suitable for data storage, management and analysis. 1) MySQL is a relational database that uses SQL to operate data and is suitable for structured data management. 2) The SQL language is the key to interacting with MySQL and supports CRUD operations. 3) The working principle of MySQL includes client/server architecture, storage engine and query optimizer. 4) Basic usage includes creating databases and tables, and advanced usage involves joining tables using JOIN. 5) Common errors include syntax errors and permission issues, and debugging skills include checking syntax and using EXPLAIN commands. 6) Performance optimization involves the use of indexes, optimization of SQL statements and regular maintenance of databases.

MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA


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