Data Sharing Research in Online Bidding System of Construction

In different local bidding systems of construction, there are a large number of duplicate data. The public data sharing system can save the cost of data collection and data verification and ensure data integrity, while data mining is possible. Through the analysis of data characteristics in the bidding system, kinds of data which can be shared are summarized. The ways of data sharing in other areas are studied. Considering the characteristics of data sharing in bidding systems, an architecture of data sharing system designed using bottom-up method is proposed, which is service oriented with a data query abstraction layer.