In SQL

users(email, name, pwd, city, gender) products(pid, descr) sales(sid, lister, pid, edate, descr, cond, rprice) bids(bid, bidder, sid, bdate, amount) items(sid, no, pid, descr) reviews(reviewer, reviewee, rating, rtext, rdate) previews(rid, pid, reviewer, rating, rtext, rdate) 6. Find sid of sales that have the text PS4 in their descriptions, and limit the results to only those that are listed by users who have at least 3 reviews with an average review rating greater than 4. The match for PS4 must be case-insensitive