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- Q4. Describe the procedure discussed in class regarding how to determine an equivalent serial schedule of a schedule with locks, if the schedule is allowed to finish under 2PL.Share the meaning of a deadlock and any personal experience of deadlocks.In your own words, what DBMS component is responsible for concurrency control? How is this feature used to resolve conflicts? Explain thoroughly using s specific example.
- I need help answering this question for my Database Management class. Thank you. 6. For each order, report order number, order date, and discount percent. Is this the correct solution? SELECT O.ORDER_NUM,O.ORDER_DATE,((SUM(I.PRICE * OL.NUM_ORDERED)-SUM(OL.QUOTED_PRICE * OL.NUM_ORDERED))/SUM(I.PRICE * OL.NUM_ORDERED)) * 100 ASTOTAL_DISCOUNT_PERCENTDISCOUNT_PERCENT FROM ORDER_LINE OLINNER JOIN ORDERS O ON (OL.ORDER_NUM =O.ORDER_NUM)INNER JOIN ITEM I ON(OL.ITEM_NUM = I.ITEM_NUM)GROUP BYO.ORDER_NUM, O.ORDER_DATE;Please help me figure out correct answer for these two practice questions