Abstract: An updating system comprises a registering module, for registering database updating requests required to be executed by an applicant of the application system during an application session, when a same data registered and updated previously is required during a same application session, the same data is acquired from a modified data in a recording module; a recording module, for recording the registered database updating requests and the modified data required for submitting to the database; a submitting module, for submitting the multiple database updating requests when the application session is completed; a merging module, for merging the database updating requests, when multiple times of updating are executed for different fields of a same data by the applicant in the application session, the database updating requests of the same data are merged into one database updating request; and an updating module, for starting database transaction and completing the database update.