form or grid?

hi im a newbie to coldfusion. i have created a form and now want to add functionality to

1. insert into the db if the model # is not already in the db
2. bring up the info in the db and edit if it IS in the db
3. delete if no longer needed in the db.

i've been searching the web and keep running into cfgrid. i had planned to use a cfform. what is the difference?

thanks in advance for your help!! 🙂