当前不少单位在进行系统改造升级时，面临着如何将各个独立部门开发的应用所采用的数据库统一，以便适应数据大集中的需求，方便将来进行数据挖掘等更高层次的应用。在数据库统一的过程中，如何快速、高效的将已有的基于异种数据库的程序，特别是采用C/C 开发的运行于linux/unix下的程序转换到现有数据库下，成为不少单位面临的问题。当然了，基于RAD开发的程序，基本上不需要进行修改，就能达到目的。 -Many units in the current system upgrades are faced with how to integrate all the independent sector to develop applications using a unified database in order to meet the data needs of large centralized to facilitate future data mining and other higher level applications. The process of reunification in the database, how to quickly and efficiently will have been based on heterogeneous database procedures, in particular the use of C/C development running on linux/unix procedures under the switch to an existing database, became quite a number of units the problems faced. Of course, RAD-based development process, basically do not need to be modified, we can achieve the objectives.