An e-contract is a contract modeled, specified, executed, controlled and monitored by a software system. Econtract evolves over a period of time and there are many scenarios of changes in e-contract environment that can adversely affect the execution of e-contracts. Hence, there is a need for evolution operations for e-contracts that can be applied to conceptual model, which can be propagated down to the logical and implementation levels. Since, econtracts are complex in nature, a more effective way of handling the evolution can be achieved through metamodel. Meta modeling helps in adapting a data model to new requirements. In this paper, we develop an active meta-modeling approach by introducing the taxonomy of evolution operations and handling meta-events in order to facilitate the structural and behavioural conformance of modeling of e-contracts evolution. .
P. Radha Krishna, Kamalakar Karlapalem