Talking about MySQL database

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What is? MySQL？

MySQL It's a multi-user 、 Multithreading Of SQL database , It's a client / Application of server structure , It's made up of a server daemon mysqld And a lot of different client programs and Libraries .

SQL (Structured Query Language Structured query language ) It is the most widely used and standard database language at present .SQL Language makes it easy to access or update information , You can use it directly SQL Query information from the website .MySQL It is fast and flexible enough to meet the information management of a website . The interface program between the database and the client can use CGI communicate . New network ChinaDNS It uses PHP, Use PHP and MySQL These two things add up , It is the best combination for the work of developing data-driven websites .PHP It is a script language for server-side execution program interpretation . If you have ASP Words , So what do you think about HTML The code embedded in the page should be familiar .PHP The code is interpreted on the server side 、 Execute and transform into ordinary HTML The page content , Send it to the browser . This model allows us to use it to complete quite complex functions .

Why MySQL？

Now almost everyone's life is inseparable from the database , If there is no database , Many things can become very difficult , Maybe you can't do it at all . Bank 、 Universities and libraries are just a few places that rely heavily on database systems . On the Internet , Using search engines 、 Shopping online and even visiting website addresses (http://www...) You can't do without a database . A database is usually installed on a computer called a database server . At present, the fastest running on the market SQL (Structured Query Language Structured query language ) One of the databases is MySQL Server, From Sweden T.c.X. DataKonsultAB Companies to develop .MySQL It can be downloaded from http://www.mysql.com/ Upload and download , It provides programming tools that are rare in other databases , and MySQL It's free for business and individual users . If you want to use MySQL Develop application software , Must pay a certain product license fee , For details, please visit MySQL"s licensing section.

MySQL The functional features of the are as follows ：

1. It can handle almost unlimited number of users at the same time ;
2. Handle up to 50,000,000 The above records ;
3. Fast command execution , Perhaps the fastest today ;
4. Simple and effective user privilege system .