hi there well i need to build an application that will with in its work
will store some user's information in a database in order to use it
later

the nature of the application implies that it should be protable, i
mean by that the user should be able to take the application in his
flash memory and use it on any other computer easily.

because of that the database should be simple and should be able to
work on any system.

so what kind of database you suggest me to use.

i am used to make java application that use Oracle or MS Access
databases but in current situation it is differnt,
cant use oracle because it cant be easily portable for the user on his
different computers,

MS Access looked good choice but the user will have to set the ODBC
settings on each and all the computers he will use, also the user will
not be able to use the application on linux OS.

so again what is the best kind of database which is sutible in this
situation