Urban Geographic Information Systems Software Development

Urban information change is an important problem relation to our country long time development, it's importance nothing less than water resource problem, food provision problem and soil employ problem. Urban Geography Information System is a kind of special information technique to exert computer' s software, hardware, network and communications technique, and to realize urban special data and non-special data input, store, inquire, searches, deal with, analyze, display, updating, urban-management, assistant decision-making, forecast, urban construct. It unite geographic position and correlation property very good, according to consumer's real demand, it can offer consumer a kind of precision and reality ' s information, to satisfy urban construct, corporation management, resident living. And in virtue of it's special space analysis and visual expression can deal with lots of assistant decision-making. But up to now, most of systems begin with nothing, and in database construct aspect, because different departments adopt vary file format, it make lots of data repeat construct and data communion is very difficult. Accordingly, construct a public Urban Fundamental Geography Information System (include database coding) can reduce urban data repeat construct, saving money, accelerate urban information change. So studying Urban Fundamental Geography Information System has a very important signification.With the beginning of studying development about Urban Geography Information System, and appraise it give urban development a great achievement; and then analyse lots of these systems bring some problem constructed by most departments in our countrywide urban. This dissertation bring forward to building a public Urban Fundamental Geography Information System (include construct database coding) and it 's study contents. The dissertation introduces development progress of this system in the aspect of software project, and it includes collectivity design, database design, encoding and test, etc. Take advantage of Visual Basic 6, ESRI ' s MapObjects and SQL Server2000construct Urban Fundamental Geography Information System. Also this system obtained provides normal GIS functions, Such as map display, zooming in, zooming out, panning, and addition of special graph. Furthermore, other functions, like map-data input, delete and edit, placename statistic map or map-data, will be in the charge of this system. By making use of special database technology based on the mode of Client/Server relationship, the system adopts visual program technology of component model and integrates module models of this system' s function, which imposed on the system is to achieve swift exploitation and compound use.