A method and an apparatus for event data processing with which modification of
a program and database is not required even when a message format is changed, thereby
making it easy to perform a maintenance operation. An event data processing method
for editing and saving a message in accordance with a request from a function program
includes: message editing utilizing a JOIN function of a function database that
uses a relational database of the function program; obtaining information for saving
the message by referring to an information table in accordance with a saving request
from the function program; and saving the message into a saving area on the basis
of the obtained information.
