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A number of expert systems have been developed recently that attempt to automate the database design process. One of the well-known problems with these and other types of expert systems is that, although they possess a high degree of expertise in their specific application areas, they usually know very...

Data resource management (DRM) has been critical to IS for almost two decades and yet there have been curiously few research studies on the subject. This study proposes and tests a model relating the nature of database planning and the database administration function to database performance. The...

INTERVIEWEE PROFILE: Gary D. Elwick is the supervisor of database administration at the Wichita-based Beech Aircraft Corporation. During his 25 years at Beech, he has been responsible for Operations, Programming, Operating System Software, Database Administration, Network Software, Disaster Recovery...

An object-relationship diagrammatic technique for communicating object-oriented database definitions is proposed and analysed. The technique permits diagrammatic display of objects in terms of system generated object identifiers, simple attributes, collection attributes, and both simple and collection...

Queuing network models have been used extensively in the study of the performance of different concurrency control protocols in database systems. However, the results obtained are mostly qualitative in nature with few quantitative design rules which address performance issues such as data and resource...

In a distributed relational database, an operation that produces the union of fragments stored at different sites at a specified site is called a distributed union operation. In implementing the distributed union operation, operations other than the union operation, such as intersection and difference...

DBDesigner is a graphical front end tool for ONTOS, a commercial object-oriented database system. Through its graphical user interface, DBDesigner allows an application developer to design, browse, and modify a database schema, and to generate C++ header files from the schema. For the purpose of...

Although the terms “data”, “knowledge”, and “information” are frequently used when referring to information systems, there is neither a clear distinction amongst them, nor a clear way to apply them in the development of database and knowledge-based systems. The objective of this paper is to analyze the...

A critical step towards computer integrated manufacturing (CIM) is the integration of computer-aided design (CAD) and computer-aided manufacturing (CAM). Well developed CAD, CAM, and Business data processing systems generally exist in an organization. These systems represent years of work and very...

While implementation/logical data models have been extensively studied and reported on, there is relatively less attention on the conceptual data models, especially from an end-user empirical perspective. Conceptual models are more suited for end-users due to the richness in semantic expressiveness and...

Providing credit information about people to corporate customers is a growth business in the U.S. We discuss the network of a company that collects information about the credit history of customers and provides it to lending and credit companies, life and health insurance companies, property and...

The reason for a different approach to systems analysis and designed is explained in cases where an objectoriented approach is to be taken to application programming. The paradigm of the object-oriented approach is shown to be a generalization of the paradigm used in the traditional approach to...

Jeffrey S. Arpan is the James F. Kane Professor of International Business and Chairman of the University of South Carolina’s International Business Department. His Department has been ranked number one in the nation by U.S. News and World Report in March 1990 and April 1991. Following is the text of...