kettle：是一个开源ETL工具。kettle提供了基于java的图形化界面，使用很方便，kettle的ETL工具集合也比较多，常用的ETL工具都包含了。(kettle的插件）-kettle: is an open source ETL tool. kettle provides a java-based graphical interface, very easy to use, kettle collections are also of the ETL tools are more co