介绍了一个通用的数据工具DMTools。它实现了基于数据库的知识发现的主要过程，可视分析，数据预处理，数据库的知识发现，数据挖掘，模型解释及模型评估算。主要介绍了这个系统的体系结构和各愉的功能。使用本工具。可从各行业的历史业务数据库中挖掘出隐含的有价值的知识，用于决策支持。

The article introduces the common tools of Data Mining (DM Tools), which realized the major process of Knowledge Discovery from Database (KDD). The process comprises visual data analysis, data preprocess, data mining, model explain and model evaluation, etc. System structure and module functions of the DM Tools are discussed. Based on the DM Tools, hidden and useful knowledge from long term accumulation, operation database can be mined to support decision making for every profession