Bertino, E., Negri, M., Pelagatti, G., and Sbattella, L., "Object-Oriented Query Languages: The Notion and the Issues," IEEE Transactions on Knowledge and Data Engineering, vol 4, no 3, June 1992, pp. 223-237.

Butterworth, P., Otis, A., and Stein, J., "The Gemstone Object Database Management System," Communications of the ACM, Vol. 34, No. 10, October 1991, pp. 65-77.

Cattell, R. G. G., The Object Database Standard: ODMG-93, Release 1.2, Morgan Kaufmann Publishers, San Francisco, 1995

Coad, P., Object Models: Strategies, Patterns, and Applications, Yourdon Press Prentice Hall, Englewood Cliffs, NJ, 1995.

Copeland, G. and Maier, D., "Making Smalltalk a Database System," Proceedings of SIGMOD Conference, 1984, pp. 316-325.

Dewitz, S. D., Systems Analysis and Design and the Transition to Objects, McGraw-Hill Companies, New York, 1996.

Diaz, O. and Paton, N. W., "Extending ODBMSs Using Metaclasses," IEEE Software, May 1994, pp. 40-47.

Elmasri, R., Larson, J., and Kouramajian, V., "Automatic Class and Method Generation for Object-Oriented Databases," Proceedings Third International Conference on Deductive and Object-Oriented Databases, December 6-8, 1993, Springer-Verlag, Berlin, 1993, pp. 395-414.

Elmasri, R. and Navathe, S. B., Fundamentals of Database Systems (2nd edition), Addison-Wesley/Benjamin/Cummings, Redwood City, CA, 1994.

Goldberg, A. and Robson, D., Smalltalk-80, Addison-Wesley, Reading, MA, 1989.

Gottlob, G., Schrefl, M., and Rock, B., "Extending Object-Oriented Systems With Roles," ACM Transactions on Information Systems, Vol. 14, No. 3, July 1996, pp. 268-296.

Guttman, M. and Matthews, J., The Object Technology Revolution, John Wiley & Sons, Inc., New York, 1995.

Kilian, M. F., "Bridging the Gap Between OO and ER," Proceedings of the 10th International Conference on Entity-Relationship Approach, University of Michigan Press, Ann Arbor, October 23-25, 1991, pp. 445-458.

Lewis, S., The Art and Science of Smalltalk, Prentice Hall, London, 1995.

Ling, T. W. and Teo, P. K., "Toward Resolving Inadequacies in Object-Oriented Data Models," Information and Software Technology, (35, 5), May 1993, pp. 267-276.

March, S. T. and Rho, S., "Object Support for Entity-Relationship Semantics," Proceedings of Workshop on Information Technologies and Systems, Cleveland, December 14-15, 1996, pp. 1-10.

Markowitz, V. and Shoshani, A, "Object Queries Over Relational Databases: Language, Implementation, and Applications," Proceedings of the 9th International Conference on Data Engineering, IEEE Computer Society Press, Los Altimos, CA, 1993, pp. 71-80.

Narasimhan, B., Navathe, S. B., and Jayayaman, S., "On Mapping ER and Relational Models into OO Schemas," Proceedings of the 12th International Conference on Entity-Relationship Approach, Springer-Verlag, Berlin, 1994, pp. 402-413.

Norrie, M. C., "An Extended Entity-Relationship Approach to Data Management in Object-Oriented Systems," Proceedings of the 12th International Conference on Entity-Relationship Approach, Springer-Verlag, Berlin, 1994, pp. 390-401.

O. Deux et al., "The O2 System," Communications of the ACM, Vol. 34, No. 10, October 1991, pp.34-48.

Rumbaugh, J., Blaha, M., Premerlani, W., and Lorensen, W., Object-Oriented Modeling and Design, Prentice Hall, Englewood Cliffs, NJ, 1991.

Rumbaugh, J., "Relations as Semantic Constructs in an Object-Oriented Language," Proceedings of OOPSLA Conference, October 4-8, 1987, pp. 466-481.

Shah, A., Rumbaugh, J., Hamel, J., and Borsari, R., "DSM: An Object-relationship Modeling Language," Proceedings of OOPSLA Conference, November 1989, pp. 191-202.

Smith, J.M. and Smith, D. C. P., "Database Abstractions and Aggregations," Communications of the ACM, June 1977, pp 405-413.

SQL 92, Structured Query Language 92 Standard, ANSI, 1992.

Teorey, T. J., Database Modeling and Design (2nd edition), Morgan Kaufmann, San Francisco, CA, 1994.

VisualWorks, User's Guide, ParcPlace Systems, Inc., 1994.

Yourdon, E., Object-Oriented Systems Design, Yourdon Press-Prentice Hall, Englewood Cliffs, NJ, 1994.

Yourdon, E., Whitehead, K., Thomann, T., Oppel, K., and Nevermann, P., Mainstream Objects, Yourdon Press Prentice Hall, Saddle River, NJ, 1995.