HSQLDB基于自由的BSD许可，而EffiProz对于非商业应用是免费的(比如学术、研究等等)。

HSQLDB is Licensed under a liberal BSD style license. EffiProz is free for none commercial use (Academic, Research, etc.).

youdao

一切都是自由的而免费的。

You are free.

youdao

但是，它是免费的且它的发布受gnu LGPL许可证的保护，所以如果您愿意的话，您有创建这些(生成器和类函数)的自由。

But because it's free and released under the GNU LGPL license, you have the freedom to create these if you'd like.

youdao