Question: Assume a database represents the following tables: CUSTOMER (CNO, NAME, AGE, STATE, BALANCE) ORDER (CNO, ORDERNO, DATE, COST, QTY) Calculate the cost of executing the

Assume a database represents the following tables: CUSTOMER (CNO, NAME, AGE, STATE, BALANCE) ORDER (CNO, ORDERNO, DATE, COST, QTY) Calculate the cost of executing the following query using the semijoin algorithm. SELECT NAME, AGE, STATE, BALANCE, QTY FROM CUSTOMER, ORDER WHERE CUSTOMER.CNO = ORDER.CNO AND AGE

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