It analyses that the fundamental causes of the gaps lie in the little importance we have attached to urban informational project and the lack of professional talented people who are taking on this job.

The aticle contrast the Urban Engineer Geological Information System and the Urban Geological Survey by their content、function、application etc,and analyse their pertinence,the feasibility and necessary to make use of each other.

Based on the investigating and practice, and the principle of data dynamic stability and information shearing, an approach on theory and application of urban spatial information engineering is made with the guidance of conception and methods of engineering system management, supporting by the 3S and the computer network technologies.

The Study on City Information and Development of Urban Economy;

The development of Internet offered safeguard to realize city information of China.

As the extension and dissimilation of traditional entity space, the issue of informational city space is unavailable research object in the subject of architecture and urban design.

Based on Rough-set theory,problems of uncertain information and generous data in urban communications network construction are solved against spatial data processing of urban information.

This paper discusses the resolution of the problems of uncertain information and generous data of urban information systems based on information entropy and Rough-set theory, which research on spatial date processing of urban information.

This paper aims to resolve problems of uncertain information and generous data of urban information systems based on Rough-set theory, and spatial date processing of urban information.