Urban planning data, which are massive, are usually stored as Auto CAD format. It is convenient to be edited and modi-fied when data stored as Auto CAD format while spatial and attribute data of which are inconvenient to be queried and searched. Toaddress the problem, Geodatabase were used to store the massive urban planning data with its excellent technical support for mas-sive spatial data storage management. In the paper, on the premise of guaranteeing data quality, with Auto CAD and Geodatabasedata model compared and analyzed, nondestructive conversion, fitting conversion, special conversi...
