MySql problem

Hi /prog/,

A MySQL noob needs some help here. I tried searching everywhere but it seems I cannot formulate my search expression correctly(English is not my first language). So the problem is. I want to limit the values that can be inserted in a column to certain possibilities. For example: I have a column phone_type and I want the only possible values there to be Work, Mobile, General and Fax. Any ideas? Sorry if this is too simple!

>>12
I thought they got fkeys a couple of years back. Or was that transactions? You know, I just about lost it when MySQL was getting lots of press for supporting features I was using in PostgreSQL ten years earlier.