im assuming you are using mysql... though i might suggest postgres....
however... go to mysql.com and look up the basic types you are allowed to store...
integers, text fields, variable character fiedls, binary fields....
you will have to decide wether to store the whole image itself in sql or to store just a string of the path to the file...
what parts of your article do you have....
some sort of internal id im sure
an author
a posting date
the body html of the article
any other fields
basical you want to try store each article as a row in a table caled ARTICLES or something...
then if you want a specific article you can say
SELECT * FROM ARTICLES WHERE author='ednark'
or
SELECT * FROM ARTICLES WHERE body LIKE '%php%'
and these will return a list of articles .....
how familiar are you with sql?