Consider the following table: Part (partno, contract, partcost) which represents the cost negotiated under each contract for a part (a part may have a different price under each contract). Now consider the following view Expensive Parts, which contains the distinct part numbers for parts that cost more than $1000: CREATE VIEW Expensive Parts (partno) AS SELECT DISTINCT partno FROM Part WHERE partCost > 1000; Under what circumstances would you be able to maintain this as a materialized view (insert, update, delete) without having to access the underlying base table Part