A method of and an apparatus for online modification/update of a database
using a recordable optical disc. A user apparatus having a version of a
database and an update date and time stored on the recordable optical
disc communicates with a server which stores information for updating the
database and an update date and time. A comparison of the respective
dates and times is made and the server transmits updated information to
the user apparatus based on the comparison. In one embodiment, the user
apparatus transmits the update date and time stored on the recordable
optical disc, the server makes the comparison and transmits the
modified/updated information based on the comparison. In another
embodiment, the user apparatus acquires the update date and time stored
on the server, makes the comparison and acquires modified/updated
information from the server based on the comparison.