Asynchronous Field Geological Map System Based on Ajax

Ajax is one of the core technologies of RIA, which implements the asynchronous interaction between the browser and the Web server. In traditional field geological map system of B/S mode, the disadvantages such as low visiting speed and bad security of such kind of field geological map system have emerged. To solve the problem of low visiting speed caused by the large-volume data of filed geological map transmitted on network, the author applies the technology of Ajax to the field geological map system and implements the asynchronous interaction between the browser and the Web map server. Compared with the system of B/S synchronous mode, the system avoids putting a computational burden on the browser and keeps the response time shorter to provide a higher level of interaction. In addition, the introduction of the concepts of role and privilege improves the security of the filed geological map information greatly.