i need the xquery and xpath for the following:
1- titles of book ordered by " mark" ( customer)
2- sum ( total) price of books writen by " joe " ( author name) and sold on 24-07-2008
3- name of customers who ordered " sciences" ( categori name) books
u can find an attached copy of the XML file where these should be done
i need it as soon as possible
im not looking for minimum bids, i will pay full price as soon as the project is done by not more than 1 day