MySQL Field Types Cheatsheet
If you have been using MySQL for your database choice, you'll probably find this cheatsheet to be pretty useful. Whether you are new to MySQL or advanced, this is pretty handy to have around. A help page on help.scibit.com offers a great breakdown of the different datatypes that are available for use in MySQL. They cheatsheet lists the data type, the reasons for use, and the size of the data type. This is a quick and easy reference that will hopefully help out.