[Typo3-dev] Split DB value and save the parts

[Georg Ringer]

Hello,

is following scenario possible: User makes a new data record which has got
among others the filed "name" and he writes "Max Mustermann" and saves the
record. Now typo should split the name to first name and laste name and
should save these two values in the DB

How can I (as newbie in extension writing) implement this?
many thanks in advance

Georg