Design And Implemtntation Of Plotting Grade And Accessing Price Of City Land System Based On GIS

With the advent of the information age, with soft environment of national economic rapid development and land policy reform continuous development, of current land use changes with each new day, the traditional way of land management was out of the rapid change of land resource. Since China's economic mode from planned economy to market economy mode, land market model from scratch gradually formed, land trading system constantly improve, real estate market gradually norms. Along with the computer technology and the rapid development of modern information technology, land grading the land has been as a basic work,at present, facing the challenge of informationization, therefore, land grading work must have the aid of computer technology, relying on computer technology as the basis of realizing geographical information system (GIS) platform for land service established the land grading information management system, thus fundamentally changing the past the traditional manual operation mode and improve speed and precision, reduce the manual intervention degree that land grading of production and exchange information with the market. In GIS vigorous development today, based on COM technology developed in various new GIS technology, group a encapsulates the GIS various modules function, and has good performance and price and very easy to second development personnel established industry system according to industry demand function structure. This system GIS technology, and with land grading combining the actual business process, developing a strong adaptability and targeted town land grading system.Urban land gradation estimation system specifically targeted at land evaluation according to GB/T18507 industries, and the town land classification and grading rules, GB/T18508 "town land appraisal regulations", "urban land-value dynamically surveying system technical specifications" and "urban land classification grading standards developed database of professional level industry application software system. Including urban land gradation, the standard land price evaluation and assessment of land three major business functions. System based on GIS platform development, backstage have large relational database support, structural design is reasonable, function system, speed fast, full consideration of the actual demand of users for the general has, grading, appraisal needs of customers to provide a complete, automation, intelligent grading information system. All the research work mainly summarized as follows several aspects:First, in the introduction of urban land gradation emphatically expounds estimate system development background and meaning, the research present situation, and this organization. Urban land grading systems use VS2008 estimates as development tools, lies in the.net as current frontier technology, the technology is advanced, and on the development of solved object-oriented shortcomings, provides a powerful service oriented functions. Possess powerful components, support cross-platform, suitable for various communication protocol, can well meet this system needs.Secondly, the introduction of the urban land classification estimates the basic concepts and principles of the system. Detailed introduction of GIS, ArcGIS, SuperMap, general GIS engines, urban land grading and evaluating the business, cadastral systems and business results, urban land grading and evaluating technical route.Then on the database design and database table structure are introduced. Urban land grading system will Oracle lOg as backend database, this system database design strictly abide by the third paradigm standards, prevent database appear abnormal, insert, update, and delete abnormal abnormal data redundant too big etc. Phenomenon, because involves spatial data storage, therefore the database optimized.Also database design and database table structure is briefly introduced. Urban Land Grading and Evaluation system will Oracle lOg database as a background, this system strictly third normal form database design standards, to prevent the database for the update anomalies, insertion anomaly, deleted abnormal phenomena such as data redundancy too, because it involves the spatial data storage Therefore, the database is optimized.Finally, given the implementation of the system of urban land grading and evaluation system, the user interface involved. Compliance friend interface design standards to the user experience as the guide, take full advantage of Windows Classic interface design and implementation of standards, taking full account of the practical application of the characteristics of urban land into the actual work of grading and evaluating the unique elements, to ensure friendly interface.