Hello All,

I am new to firebird and DB design concepts, all I know is it is a
relational database, I have a situation where many to many relationship
is defined:

A user can operate multiple machines and A machine can be operated by
multiple users.

I don't know how can I handle this situation in firebird (actually in
any database).

I would really appreciate if someone can please help me with this.

Thanks for all the help.