[IEEE Comput. Soc. Press ICECCS '96: 2nd IEEE International Conference on Engineering of Complex Computer Systems (held jointly with 6th CSESAW and 4th IEEE RTAW) - Montreal, Que., Canada (21-25 Oct. 1996)] Proceedings of ICECCS '96: 2nd IEEE International Conference on Engineering of Complex Computer Systems (held jointly with 6th CSESAW and 4th IEEE RTAW) - An architectural framework for interoperation of distributed heterogeneous database systems