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I would like to know if I can use MySQL Connector (libmysql.dll) with comercial Lazarus project. As far as I know, it's under GNU GPL.
Thanks for any answers.
Not if you want to sell your end product, unless you want to licence it under GPL as well.
MySQL Connector also provides commercial licenses for that purpose.
The answer is right on the page you're linking to:
MySQL open source software is provided under the GPL License.
Check out http://www.mysql.com/about/legal/licensing/oem/ which should tell you which is the license you need.
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Can someone explain to me the following:
We are running a website with a web service using MySQL and we are getting paid for it monthly. Can we use MySQL community edition for this? Can we use MySQL community edition for development of this kind of software? We are not distributing our source code anywhere.
Another example: Can you write a website using CMS using MySQL for a customer? Can you use the free edition?
I think it should be fine, as it is under the GPL license.
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I want to create a website in JSP and the database will be MySQL. I will host the website on the internet. Is it required to obtain any licence to develop them on my machine?
As http://mysql.com/products/ states, MySQL database has 4 editions.
For development it is enough to use community edition, which is distributed under GPL license, which is open-source license.
You don't need anything.
No it'f free if you don't intend to sell the product including the mysql database software. Found here.
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Can I use MySQL community edition in a commercial product for free?
The product is not open source.
Do I need to acquire some kind of license or not, in order to use MySQL?
Thanks
MySQL is licensed under the GPL with the linking exception. That basically means that you can link your own program against MySQL libs without licensing it under the GPL as well.
But you have to obey all other terms of the GPL, such as providing the license info for MySQL, providing the source code of it (and more, see GPL license text).
Depending on your product this can either be acceptable or you want to buy a license to get rid of the GPL requirements.
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I have a MySQL DB and I would like to generate its relational diagram. Is there a tool that can connect to the DB and automatically generate it for me?
Yes, DEVART's DBForge for MySQL will do this.
There is a free Express edition, I'm not sure it has this functionality, but have a look at: http://www.devart.com/dbforge/mysql/studio/
If you are a happy owner of IntelliJ IDEA Ultimate Edition, you can use its database tools. IDEA is able to connect to databases and build UML diagrams.
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I was checking out what it would take to add my free extension to Magento Connect. I noticed a list of open source licenses. Can anyone point out the major difference?
Roughly speaking they're all about the same. Each license permits anyone to reuse your code as long as they credit you, but the (L)GPL, MPL and OSL prohibit someone from doing so with a different license to the one you chose.