how hard will it be for me to change my database from mysql to oracle? or if anyone has any sujestions about wheater or not i even need to move to oracle. right now im working on a shopping cart for a company but we are also planning on getting a new POS system and do you guys think i need to move them from mysql to oracle or could i leave it all in mysql or should i keep the website as mysql and have the pc application for the POS system in oracle and connect the to via some api to make sure they are both up todate with one another?