blocks|key|4820430|text|因为它是免费的(或者历史上一直是免费的)，并且比它的竞争对手(例如postgresql)更早地在开源平台堆栈上获得了临界质量。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4820431|由于经典的network+effects+in+software，关系型数据库不仅有价值，而且它的用户基础也很有价值，特别是对于用户可以做出贡献的开源软件。这就是为什么临界质量如此重要的原因。|offset|length|4820432|任何产品中的网络效应都被经典地观察到会导致“滚雪球效应”或自我实现的预言，即受欢迎程度进一步提高。这可以确保早期成功的产品的主导地位，无论technical+flaws+it+may+or+may+not+have如何。此外，rdbms客户非常保守(DBA不喜欢将任何尚未投入生产的东西投入生产)，并且由于rdbms使用和操作的无数微妙之处，在rdbms之间切换的成本对任何开发团队都很重要。|4820433|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/Network_effect#Software|1|http://en.wikipedia.org/wiki/Mysql#Criticism^0|0|5|R|0|0|1X|12|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@$D|T|E|U|1|V]]|A|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@$D|X|E|Y|1|Z]]|A|$]]|$1|H|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]|P|$5|K|L|M|A|$N|Q]]]]

Because it's free (or historically has been free) and gained critical mass on the on the open source platform stack earlier than its competitors (e.g., postgresql).

Due to classic <a href="http://en.wikipedia.org/wiki/Network_effect#Software" rel="nofollow noreferrer">network effects in software</a>, and rdbms is valuable not just in itself but also its userbase, especially so for OSS where users can contribute back. This is why critical mass is so important.

Network effects in any product are classically observed to cause a "snowball effect" or self-fulfilling prophecy where popularity fuels further popularity. This can ensure the dominance of an early successful product despite any <a href="http://en.wikipedia.org/wiki/Mysql#Criticism" rel="nofollow noreferrer">technical flaws it may or may not have</a>. Additionally, rdbms customers are highly conservative (DBAs are loathe to putting anything in production that hasn't been out for very long) and switch costs between rdbms' are significant for any development team, due to innumerable subtleties of their use and operation.

blocks|key|1113800|text|以下是使用MySQL+(link)的好处|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1113801|另外，一个更完整的讲座(link)|1113802|和维基(link)|1113803|entityMap|0|LINK|mutability|MUTABLE|url|http://www.novell.com/documentation/oes/web_mysql/index.html?page=/documentation/oes/web_mysql/data/aj5bj52.html|1|http://hxfu.org/rdbms_alternatives/#section8|2|http://en.wikipedia.org/wiki/MySQL^0|C|4|0|0|C|4|1|0|4|4|2|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|D|3|E|5|6|7|X|8|@]|9|@$A|Y|B|Z|1|10]]|C|$]]|$1|F|3|G|5|6|7|11|8|@]|9|@$A|12|B|13|1|14]]|C|$]]|$1|H|3|-4|5|6|7|15|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]|R|$5|K|L|M|C|$N|S]]]]

Here are benefits of using MySQL (<a href="http://www.novell.com/documentation/oes/web_mysql/index.html?page=/documentation/oes/web_mysql/data/aj5bj52.html" rel="nofollow noreferrer">link</a>)

Also, a more throughout lecture (<a href="http://hxfu.org/rdbms_alternatives/#section8" rel="nofollow noreferrer">link</a>)

And wiki (<a href="http://en.wikipedia.org/wiki/MySQL" rel="nofollow noreferrer">link</a>)

blocks|key|1113811|text|MySQL是快速、免费和开源的。它很容易安装和运行，具有多种语言的良好API和几个内置的伸缩选项(复制和最近的分区)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1113812|此外，它还具有很好的市场营销能力:)|1113813|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

MySQL is fast, free and open-source. It is easy to get up and running, has a good API in many languages and several inbuilt scaling options (replication and recently partioning).

In addition, it has very good marketing :)

blocks|key|1119551|text|试着询问太阳微系统公司对MySQL的看法。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1119552|entityMap|0|LINK|mutability|MUTABLE|url|http://www.sun.com/software/products/mysql/^0|C|5|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Try asking Sun Microsystems for their opinion on <a href="http://www.sun.com/software/products/mysql/" rel="nofollow noreferrer">MySQL</a>.

blocks|key|1034840|text|MySQL是轻量级的，易于使用，并且有一个非常活跃的全球社区。一个活跃、充满活力的社区表明你的同龄人有一定的接受度，我认为这很好地表明了一个产品在市场上的地位。我个人对MySQL论坛上发布的任何问题几乎都有即时的答复。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1034841|在Sun收购MySQl之后，它在业界获得了更多的牵引力和认知度。根据您想要的支持类型，您可以选择MySQL的商业版本。|1034842|以上是我个人的看法。我敢肯定，你可以在网上找到很多详细介绍MySQL各种功能的链接。|1034843|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

MySQL is light, easy to use and has an excellent worldwide community that is very active. An active, vibrant community indicates a certain acceptance by your peers and I think is a very good indication of a product's position in the market. I, personally have had almost immediate answers to any queries posted on the MySQL forum. 

Post, the acquisition of MySQl by Sun, it has gained even more traction and recognition in the industry. Depending on the type of support you want, you can opt for commercial versions of MySQL. 

These are my personal views. I'm pretty sure you can get a lot of links on the web detailing MySQL's myriad features.

blocks|key|1034873|text|我认为这也取决于组织的规模。我不会说MySQL正在获得全世界的认可。大多数大公司(财富500强)仍然对开源软件感到羞涩，他们更愿意为支持付费。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1034874|开源公司正在使用的新服务模型，如Spring+Source、JBoss和Red，以及来自Sun的MySQL，都有很大帮助。|1034875|但它并没有打开任何闸门。大多数IT经理都知道，从IBM、Microsoft和Oracle购买产品不会丢掉工作。他们会抱怨许可费，但他们仍然担心开源。|1034876|有一个两层的采用模型:大和小。大型公司对IBM、微软和甲骨文以及C#和Java等主流语言感到满意。小公司可以尝试一下开源、Python、Ruby等。|1034877|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

I think it depends on the size of the organization as well. I would not say that MySQL is gaining worldwide acceptance. Most large corporations (Fortune 500) are still gun-shy about open source software and would prefer to pay for support. 

The new service model that's being employed by open source companies, like Spring Source, JBoss and Red Hat, and MySQL from Sun, helps a great deal. 

But it hasn't opened any flood gates. Most IT managers know that they won't lose their jobs buying from IBM, Microsoft, and Oracle. They'll complain about the license fees, but they're still worried about open source.

There's a two-tiered adoption model: large and small. The large companies feel comfortable with IBM, Microsoft, and Oracle and mainstream languages like C# and Java. The small companies can take a shot with open source and Python, Ruby, etc.

blocks|key|4820470|text|虽然网络效应是MySQL仍然流行的原因，但我认为它之所以受欢迎有两个简单的原因:它是免费的，这使得它成为廉价网站管理员的理想选择；它对于人们使用廉价网站主机完成的大多数任务来说已经足够好了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4820471|MySQL并没有成为IT后台的佼佼者。为玩具网站用户提供的网络主机需要一个数据库产品。在myspace、facebook和livejournal出现之前，网站创建者会使用可用的最便宜的网站提供商推出自己的网站。|4820472|PHP自身的普及所带来的协同效应可能也不是微不足道的。但我怀疑这是一个不必要的题外话。|4820473|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

While the network effect is why MySQL remains popular, I think it gained its popularity for two simple reasons: it is free which makes it ideal for cheap webhosts to provide to their cheap web admins; and it is good enough for most tasks one would use a cheap webhost for. 

MySQL didn't climb into prominence in the IT back office. Webhost providers for the toy website users needed a database offering. Before there was myspace and facebook and livejournal would be web site makers would roll their own using the cheapest website provider available.

The synergy with PHP's own rise to popularity is probably not insignificant either. But that's an unnecessary digression I suspect.

blocks|key|1113855|text|MYSQL并不总是免费的。如果您打算将其用于商业目的，则应购买许可证(link1+link2)。你可能需要再检查一遍。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1113856|您不会被强制购买许可证，但建议您购买许可证。开源软件开发并不总是免费的。|1113857|entityMap|0|LINK|mutability|MUTABLE|url|http://www.mysql.com/about/legal/licensing/oem/|1|https://shop.mysql.com/enterprise/?rz=s2^0|Z|5|0|15|5|1|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]|$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

MYSQL is not always free. If you intend to use it for commercial purposes, a license should be bought (<a href="http://www.mysql.com/about/legal/licensing/oem/" rel="nofollow noreferrer">link1</a> <a href="https://shop.mysql.com/enterprise/?rz=s2" rel="nofollow noreferrer">link2</a>). You may want to double check.

You are not forced to buy a license but it is recommended. Open source software development does not always come free of cost.

I'm having difficulties to answer this question. Can someone help me?

Discuss the benefits of MYSQL and explain why it is gaining acceptance as the RDBMS of choice for many organizations worldwide.

MYSQL and RDBMS

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我很难回答这个问题。有人能帮我吗？讨论MYSQL的好处，并解释为什么它被世界各地的许多组织接受为RDBMS的首选。

问MYSQL和RDBMS
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