There have been several approaches to integrating heterogeneous database systems in enterprises. Due to their inherent limitations, however, it has been difficult to apply them to actual situations in enterprises. In this paper, we propose EasyConnection, a system that is based on the flexible and extensible architecture and overcomes the limitations of the previous approaches, EasyConnection consists of Wrappers, Sharing Manager, and Clients, and the connections among these components are based on CORBA. It can also be used as the information management mechanism for such application systems as ERP, PDM, and EAI.