TY - SER AU - Liu, Ling AU - Pu, Calton TI - An adaptive object-oriented approach to integration and access of heterogeneous information sources KW - INTEROPERABILITY KW - DISTRIBUTED DATA MANAGEMENT KW - OBJECT-ORIENTED DATA MODEL KW - INTELLIGENT INTEGRATION KW - HETEROGENEOUS INFORMATION SOURCES KW - QUERY MEDIATION N1 - A large-scale interoperable database system operating in a dynamic environment should provide Uniform access to heterogeneous information sources, Scalability to the growing number of information sources, Evolution and Composability of software and information sources,and Autonomy of participants,both information consumers and information producers. We refer to these set of properties as the USECA properties ER -