请问mysql是免费的么？可以用于企业么？谢谢大家！

[NewMsg123]

请问mysql是免费的么？可以用于企业么？谢谢大家！
希望大家能给我些信息，比如哪些数据库是免费的，功能怎么样，
问一个问题，开源的＝＝免费么 ？
谢谢 ！

[蒋晟]

Proprietary applications (aka applications that do not share their source code and the rights to modify it with others) should always use the proprietarily licensed version of MySQL.

Software lisensed under a Free Software/Open Source license (such as the GPL, the BSD license, the Apache license and so on) can use MySQL for free.

[飞哥]

爱怎么用就怎么用吧
没人管你～：）

[NewMsg123]

谢谢，上面的两位，不过用到企业还是有点不安，可以的话，请给多点的信息，谢谢大家！

[aaron7]

MySQL uses a "dual licensing" business model. Under this model, users may choose to use MySQL products under the free software/open source GNU General Public License (commonly known as the "GPL") or under a commercial license.

With the GPL license, MySQL is available free of charge. Users may download the software for free and modify, integrate and distribute it. However, GPL users must abide by the rules of the GPL, which stipulate that if a MySQL-based application is redistributed, the complete source code for this application must also be open and available for redistribution.

MySQL AB offers a commercial license for organizations that do not want to release the source code for their application. Commercial license customers get a commercially supported product with a level of assurance from MySQL AB, without the requirement that their MySQL-based software must be "open sourced". MySQL is able to provide a commercial license because it has full ownership of the MySQL code.

大概意思就是说如果你企业只要遵守GPL,就可免费使用mysql,但是如果你企业将来发布基于mysql的商业软件的话，就要公开源码

[aaron7]

更多参见http://www.mysql.com/company/legal/licensing/faq.html
强烈推荐使用mysql，看看mysql的客户吧

[danssion]

现在很大部分都用mysql了

这样成本很合算

[littleboys]

可以免费使用的

[kissknife]

当用于商业用途的时候是要付费的，只是也比较便宜..

[天地客人]

用于一般项目,可以用!大项目也就不在乎数据库的钱了!