4. MySQL tutorial

Mysql

MySQL is the most popular relational database management system, and MySQL is one of the best RDBMS (Relational Database Management System: relational database management system) applications in WEB applications.

In this tutorial, you will quickly grasp the basic knowledge of MySQL and easily use the MySQL database.

4.1. What is a database?

Database (Database) is a warehouse that organizes, stores and manages data according to the data structure.

Each database has one or more different API for creating, accessing, managing, searching, and replicating saved data.

We can also store data in a file, but it is relatively slow to read and write data in the file.

So now we use a relational database management system (RDBMS) to store and manage large amounts of data. The so-called relational database is a database based on the relational model, which deals with the data in the database with the help of mathematical concepts and methods such as set algebra.

RDBMS is the characteristics of relational database management system (Relational Database Management System):

  • 1.数据以表格的形式出现

  • 2.每行为各种记录名称

  • 3.每列为记录名称所对应的数据域

  • 4.许多的行和列组成一张表单

  • 5.若干的表单组成database

4.2. RDBMS terminology

  • 4.2.1. MySQL tutorial

    MySQL is the most popular relational database management system, and MySQL is one of the best RDBMS (Relational Databas...
    2025-10-25 13:32:51 UTC

  • 4.2.2. MySQL installation

    The MySQL download address for all platforms is: MySQL 下载 . Pick what you need. MySQL Community Server Version and corre...
    2025-10-25 13:32:52 UTC

  • 4.2.3. MySQL management

    Start and shut down the MySQL server ¶ Under the Windows system ¶ On Windows, open a command window (cmd) and go t...
    2025-10-25 13:32:51 UTC

  • 4.2.4. MySQL PHP syntax

    MySQL can be used in many languages, including PERL, C, Cellular, JAVA and PHP. Among these languages, MySQL is the most wid...
    2025-10-25 13:32:49 UTC

  • 4.2.5. MySQL connection

    Connect using mysql binary ¶ You can use MySQL binary to enter the mysql command prompt to connect to the MySQL databas...
    2025-10-25 13:32:48 UTC

  • 4.2.6. MySQL creates a database

    After logging into the MySQL service, we can use the create Command to create the database, the syntax is as follows: ...
    2025-10-25 13:32:51 UTC

  • 4.2.7. MySQL deletes the database

    Using ordinary users to log in to the MySQL server, you may need specific permissions to create or delete MySQL databases, s...
    2025-10-25 13:32:52 UTC

  • 4.2.8. MySQL Select Database

    After you connect to the MySQL database, there may be multiple operational databases, so you need to select the database you...
    2025-10-25 13:32:50 UTC

  • 4.2.9. MySQL data type

    Defining the type of data field in MySQL is very important for optimizing your database. MySQL supports many types, which ...
    2025-10-25 13:32:48 UTC

  • 4.2.10. MySQL creates a data table

    The following information is required to create an MySQL data table: Table name Table field name Define each tab...
    2025-10-25 13:32:51 UTC

  • 4.2.11. MySQL delete data table

    Deleting tables in MySQL is very easy to operate, but you have to be very careful when deleting tables, because all data wil...
    2025-10-25 13:32:48 UTC

  • 4.2.12. MySQL insert data

    Used in the MySQL table INSERT INTO SQL statement to insert data. You can insert data into the datasheet through the mys...
    2025-10-25 13:32:49 UTC

  • 4.2.13. MySQL query data

    The MySQL database uses SQL SELECT statements to query data. You can query the data in the database from the mysql > co...
    2025-10-25 13:32:48 UTC

  • 4.2.14. MySQL WHERE clause

    We know that SQL SELECT statements are used to read data from the MySQL table. To conditionally select data from a table, ...
    2025-10-25 13:32:50 UTC

  • 4.2.15. MySQL UPDATE update

    If we need to modify or update the data in MySQL, we can use the SQL UPDATE command to do so. Grammar ¶ The following...
    2025-10-25 13:32:49 UTC

  • 4.2.16. MySQL DELETE statement

    You can use SQL’s DELETE FROM command to delete records in the MySQL datasheet. You can do it in the mysql> Execute th...
    2025-10-25 13:32:49 UTC
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