KNIME的数据库连接
最近被导师告知要做数据挖掘方面的东西，于是一窍不通的我硬着头皮学起了数据挖掘。首先便是工具的问题，对一窍不通的我来说选工具实在是个难题，想想还是找个开源的吧。当然这方面的文章很多，开源的数据挖掘工具也很多，比较了半天终于选定了KNIME。 然而
最近被导师告知要做数据挖掘方面的东西，于是一窍不通的我硬着头皮学起了数据挖掘。首先便是工具的问题，对一窍不通的我来说选工具实在是个难题，想想还是找个开源的吧。当然这方面的文章很多，开源的数据挖掘工具也很多，比较了半天终于选定了KNIME。
然而，接下来又是一个头大的问题，这个玩意儿没有中文帮助，好吧，华丽丽的去看英文帮助文档。。。
搞清楚了它的基本工作原理之后便是要把那些节点的功能弄清楚，不然节点的基本功能都没有，如何建模呢？好吧，边学边练。。。
首先是连数据库，因为大部分的数据还是要从数据库读入的。如果只是读入一张表的话，Database Reader就可以了，KNIME自带的是JDBCODBC Driver，我想大家应该都有用windows的管理工具建过数据源吧？是的，就是那个。在Database URL参数下输入那个就行了jdbc:odbc:
但当时我的连接并没有成功，还以为这个参数理解错了，后来才发现该项配置还有一个参数：SQL Statement，其默认值是：SELECT * FROM 或许这并不能算什么问题，但对那些跟我一样刚开始学KNIME的菜鸟们来说还是有点用的吧，呵呵，继续学习中。。。 ，要将
替换成你数据库里的有效表才行，好了，连接成功！
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