use a file as a database, access rights

[Torsten Mohr]

Hi,

i'd like to write a script that makes use of a database.

It would be great if the database would store all its data
in a file, that would be great for data exchange.

It would also be great if i could use SQL, as i have some
experience in that.

Also, i NEED access rights to certain parts of the database.
Several people should work on it and NEED to have different
access rights.


Can anybody give me some recommendations on what to use?


Thanks for any hints,
Torsten.