A comparison of relational database management systems UNIFY and iDB

One of the most important qualities of a database management system running on a small system is its ability to provide data independence. A relational database management system provides data independence through its use of tables for data storage. Use of a standard operating system means that a database management system can be run on a wide variety of systems, allowing data to be transported not only between small systems but between small and large systems. Assuming that a database management system provides data independence, what other features are needed? A comparison of the features provided by two such database management systems and how easy they are to use would be helpful in answering this question. This paper presents a comparison of UNIFY and Intel Database Management System (iDB). Both are relational, multi-user systems that run under the UNIX operating system.