Advanced Applications and Future Research Issues of OODBs

What are the problems in developing applications using current OODBMSs? Recently, much attention has been focussed on Object-Oriented Database Management systems (OODBMSs) and their new application areas such as CAx applications, CIM databases, Office Information Systems, MIS applications, geographical databases, multimedia databases, very large knowledge bases, and CSCW applications. Although many research prototypes and commercial products of OODBMSs have been developed and a.pplication developments have started in many places, we have not yet seen a very successful and typical application developed by these technologies. That is, we have not yet seen MYCIN (which was a typical and successful application of expert system technologies) in the ruea, of object-oriented databa.ses.