Research of Government Procurement Services Collaboration Model Base on the Fusion of Virtual Data Layer

For problems existing in government procurement information systems, such as data sources diversity, redundancy and inconsistency, a virtual data integration layer procurement service collaboration model is proposed. Such model can establish a mapping function between key database of government procurement and virtual data layer for standardization of data reorganization. Then it realize the cross-sectoral collaborative procurement processes through the standardization of services. The research work focuses on the virtual data services layer modeling and SOA-based collaborative method. The practical application result shows: the model is successful in shared access and service integration of multi-source heterogeneous data, thus it improves the system scalability, moreover it has great reference value for the construction of the integrated government procurement system.