OBJECT ORIENTATION IN DATABASE INTEROPERATION CASE STUDY OF VERSION CHANGED RELATIONAL DATABASES

This paper focuses on semantic issues that arise during non update querying of interoperating relational databases; the semantics are classified according to their location in a five layer information expressivity architecture. The system used as a case study is an operational engineering fault logging system which has been significantly modified to meet user requirements; however for tactical planning purposes information from the old and new systems need to be analysed together. This paper discusses the possible use of object oriented techniques and data models for the interoperation of relational database systems