MySQL有乜用,點用?

正如樓上所說, mysql 其實是一個資料庫系統, 資料庫的作用是有系統地儲存資料, 然後又有系統地擷取資料. 作用好像你家中的記事簿記錄電話地址等的功用, 但當然要比他強大了.
至於如何使用, 可參考以下連結, 裡面有詳細的說明書,

http://dev.mysql.com/doc/
相關中文教學,

http://twpug.net/docs/mysql323/manual_Tutorial.html
http://taipeilink.myweb.hinet.net/TeachFiles/MySQL/MySQL_D001.htm
而mysql 通常都是配合apache, php來開發網上系統或程式的, 若是打算使以windows 平台試的話, 其實可下載以下最新版本的套件,
AppServ 2.5.8

MySQL Root Password Reset
Apache 2.2.4
PHP 5.2.1
MySQL 5.0.27
phpMyAdmin-2.9.2
Download
Sourceforge.net : http://prdownloads.sourceforge.net/appserv/appserv-win32-2.5.8.exe?download

MD5SUM : b5daeded874474873a03e75b36511fe7

The MySQL® database has become the world's most popular open source database because of its consistent fast performance, high reliability and ease of use. It's used in more than 11 million installations ranging from large corporations to specialized embedded applications on every continent in the world. (Yes, even Antarctica!)

Not only is MySQL the world's most popular open source database, it's also become the database of choice for a new generation of applications built on the LAMP stack (Linux, Apache, MySQL, PHP / Perl / Python.) MySQL runs on more than 20 platforms including Linux, Windows, OS/X, HP-UX, AIX, Netware, giving you the kind of flexibility that puts you in control.

Whether you're new to database technology or an experienced developer or DBA, MySQL offers a comprehensive range of certified software, support, training and consulting to make you successful.

MySQL continues to have a very high adoption rate across several industries and is known for its reliability, ease of use, and performance. MySQL 5.0 features are likely to boost MySQL to even higher adoption rates and may open doors for support for more packaged applications and tools."
Noel Yuhanna
Forrester Research