Foreground-background data synchronization method for ENUM-DNS (Telephone Number Mapping working group - Domain Name System), and foreground-background data synchronism system for ENUM-DNS

The invention relates to a foreground-background data synchronization method for an ENUM-DNS (Telephone Number Mapping working group - Domain Name System), and a foreground-background data synchronism system for the ENUM-DNS. The method includes the following steps: after successfully executing an account opening/closing instruction from an external network element, a background gives a notice to a service foreground on the information of an account opening/closing record; the service foreground stores the information of the account opening/closing record in a pre-created temporary data storage point; when the time for timed data activation comes, the background issues a change data file to the service foreground; the service foreground carries out the loading of the change data file, and deletes all the data in the temporary data storage point. According to the invention, the real-time effectiveness of foreground data and background data is achieved, so that the uniformity of the foreground data and the back