Class Library Support for Workflow Environments and Applications
IEEE Transactions on Computers
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This paper introduces the R-OK (Reflective Object Knowledge) Model. Using this model, a new information system may be constructed by interconnecting pre-existing systems. The process is enabled by the introduction of a layer of metalevel software that surrounds each local DBMS, and which knows a system's capabilities and functionality. An object-oriented approach is taken to the description of the metalevel with the introduction of a group of special reflective objects that are used to describe and monitor every domain object in the system. Metaobjects allow the specification and implementation of a newly composed system to be intertwined. In this way a newly composed information system can draw upon the functionality of already existing systems.