What is a MySQL database? And MySQL features

What is MySQL?

MySQL is currently the most popular open source database. It is a completely networked cross-platform relational database system. It was developed by the Swedish MySQL AB company. Its symbol is a dolphin named Sakila, which represents the speed, capability, precision and excellence of the MySQL database and team.

MySQL database can be called the fastest running SQL language database at present. In addition to having many functions that other data does not have, the MySQL database is also a completely free product that users can download and use directly from the Internet without paying any fees.

Let’s introduce several features of MySQL:

1. Powerful functions: MySQL provides a variety of database storage engines, each with its own strengths. , suitable for different applications. Users can choose the most appropriate engine to get the highest performance, and these engines can be used to handle high-intensity Web search sites with hundreds of millions of visits every day. MySQL supports transactions, views, stored procedures, triggers, etc.

2. Support cross-platform: MySQL supports at least 20 or more development platforms, including Linux, Windows, FreeBSD, IBMAIX, AIX and FreeBSD, etc. This allows programs written on any platform to be ported without any modifications to the program.

3. Fast running speed: High speed is a significant feature of MySQL. In MySQL, the extremely fast B-book disk table (MyISAM) and index compression are used; by using optimized single scan multiple connections, the connection can be realized extremely quickly; the SQL function is implemented using a highly optimized class library, and the running speed is extremely fast .

4. Support object-oriented: PHP supports hybrid programming. Programming methods can be divided into three methods: purely object-oriented, purely process-oriented, and mixed object-oriented and process-oriented.

5. High security; flexible and secure permissions and password systems allow basic authentication of the host. When connecting to the server, all password transmissions are encrypted, ensuring password security.

6. Low cost: MySQL database is a completely free product that users can download directly from the Internet.

7. Support various development languages: MySQL provides support for various popular programming languages ​​and provides them with many API functions.

8. Large database storage capacity: The maximum effective capacity of a MySQL database is usually determined by the operating system's file size restrictions, not by MySQL's internal restrictions. The InnDB storage engine stores InnDB tables in a table space, which can be created from several files. The maximum capacity of the table space is 64TB, which can easily handle large databases with tens of thousands of records.

9. Support powerful built-in functions: PHP provides a large number of built-in functions, covering almost all functions in web application development. It has built-in functions such as data connection and file upload. MySQL supports a large number of extension libraries, such as MySQLi, etc., which facilitates the rapid development of Web applications.

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