[Images in a Blog]

I'm super new to blogging/php/mySQL and in the process of coding my own (following a tutorial from the book 'blog design solutions').

Unfortunately it doesnt show you how to add images to a blog post. Presumably you cannot directly store the image in the database, only a link to it.

Ideally I would like a setup where I may or may not have an image for each blog post. What would I put as the field in the table? How could I code it so I sometime have images in my blog post and sometimes don't?

My table currently looks like this..

[img]http://img325.imageshack.us/img325/4480/blogtablepe9.jpg[/img]

And my addpost screen looks like this

[img]http://img325.imageshack.us/img325/2518/addposttl1.jpg[/img]