DATA SYNCHRONIZATION SYSTEM AND METHOD FOR SYNCHRONIZING DATA

A data synchronization system includes a database, a management device, and a synchronization device. The database includes user folders, and the management device includes an authentication module and a data storage module. The authentication module authenticates the identification of the user who uses a client terminal device to log in the authentication module and output an authentication signal based on the result of the identification. The data storage module receives the authentication signal and output an index signal based on the authentication signal. The client terminal device is configured to connect to a corresponding user folder based on the index signal, and the corresponding user folder is used as a major user folder. The synchronization device logs in one of the accounts of a commercial database and synchronizes the data of the account to the major user folder. Furthermore, a method for synchronizing data is also disclosed herein.