1. A method for updating a graphic code database, the method comprising: receiving a graphic code query request for a graphic code; searching product information corresponding to the graphic code in the graphic code database; searching whether the graphic code database includes at least one recommended keyword corresponding to the graphic code in response to a determination that the graphic code database does not include product information corresponding to the graphic code; in response to a determination that the graphic code database includes the at least one recommended keyword: returning one or more recommended keywords to a user device based on the graphic code, and in response to a determination that the graphic code database does not includes the at least one recommended keyword: receiving one recommended keyword from the user device, and associating the one recommended keyword with the graphic code.