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In the 1970s, Scott proposed the concept of a decision support system. Since then, a lot of research on decision support systems, decision support problem area continues to expand, has gradually been attention in the field of management science, economics, applied mathematics, engineering technology, information technology. Various distributed technologies developed in artificial intelligence, online analytical processing, data warehousing, data mining, combined with each other through the network technology, communication technology and information processing technology to solve a series of problems. Decision support systems to receive attention in the growing number of units and the field, and play a huge role. The the relations people live and work in the real estate industry, thus the government's housing policy relations and social development goals. Current housing, land management departments to master a lot of real estate registration data, market transaction data, data of affordable housing, land and basic data, but due to a wide range of business premises resources, many departments involved, and the progress of the development of information technology departments inconsistent, leading to the dispersed business systems and database construction, data has multi-source, heterogeneous, dynamic, more involved in the type of business, the strong correlation characteristics of the flood of data of varying quality, resulting in the query statistics and decision support there are a number of insufficient leadership policies formulated to provide data to support data sharing also can not be provided to the relevant functional departments. Construction of the subject system for the planning application system of B / S (Browser / Server) layered architecture based on J2EE platform, cross-operating system, database system and application server running, scalability, high degree of automation, feature-rich, easy-to-use technology framework. Multi-source data access problem is solved through the use of Web services technology, based on J2EE multi-tier application systems integration organization, the use of UML technology to build business-oriented themes thematic databases, object-oriented technology for data warehouse combined with the application of business segments, application of spatial data engine management massive spatial data using XML technology to solve complex reports display platform based on GIS technology to build three-dimensional visual display of the decision-making results. GIS visual display of the characteristics of the real estate market situation, the affordable housing supply and demand and the statistics of the distribution and display, and real estate information, and provides a powerful data support for the leadership's decision-making at all levels.
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