if the article stores pictures this can make it more complicated.
in a .doc file, rtf etc this isn't a problem obviously.
to do it with a database, you need to store the name of the image in the database, then when you output the data, you output the name&path into an HTML IMG tag.
If articles will require more than one image you will need to put it into a different take and then create a many to many relationship.
Also, you will need to consider upload images, resizing, will you need thumbnails? etc. etc. Images can quickly get complicated when you are dealing with user adding them. however, don't let you put that off, I'm sure you can find examples and functions that do lots of this, just Google for it.