I'm making a very Simple database. its has ID, last name. telephone no. Type of OS (Windows/Linux/Mac). MY QUESTION IS, If a person has all the 3 OS, and some has 2 OS, other has 1 OS, How do i make only 1 field name for the the 3 selection, and make a database, a table and query where 1 person has 2 OS and other has 1 or 2 and not choose only 1 OS? I have no problem making a table where 1 can only choose 1 OS(windows, Linux,Mac) , my problem is for other people who has 2-3 OS..