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Consider the following two tables and four queries in SQL. Book (isbn, bname), Stock (isbn, copies) Query 1: SELECT B.isbn, S.copies FROM Book B INNER JOIN Stock S ON B.isbn = S.isbn;   Query 2: SELECT B.isbn, S.copies FROM Book B LEFT OUTER JOIN Stock S ON B.isbn = S.isbn; Query 3: SELECT B.isbn, S.copies FROM Book B RIGHT OUTER JOIN Stock S ON B.isbn = S.isbn;   Query 4: SELECT B.isbn, S.copies FROM Book B FULL OUTER JOIN Stock S ON B.isbn = S.isbn;   Which one of the queries above is certain to have an output that is a superset of the outputs of the other three queries?
MongoDB can use the _________ of indexes to fulfill queries.
A certain computation generates two arrays a and b such that a[i]=f(i) for 0 ≤ i < n and b[i] = g (a[i] ) for 0 ≤ i < n. Suppose this computation is decomposed into two concurrent processes X and Y such that X computes the array a and Y computes the array b. The processes employ two binary semaphores R and S, both initialized to zero. The array a is shared by the two processes. The structures of the processes are shown below. Process X: private i; for (i=0; i
Neha and Sneha each own a boutique. They both sell a dress of Rs 3200, neha computes profit on cost price and sneha computes on selling price. They end up making profit of 20% respectively. By how many Rs is sneha’s profit more than neha?
Two merchants sell an article for Rs. 2,000 each. Merchant P computes his profit on cost price while Merchant Q computes his profit on selling price. Both make a profit of 25% each. By how many rupees is the actual profit made by Q more than that made by P?
Two traders sell, each an article for Rs. 2100. If traders A computes his profit on cost price, while trader B computes his profit on selling price, they end up making profits of 16.67 % respectively. By how much is the profit made by trader B greater than that of trader A?
Reducing the complexity of complex queries by similarly handling sub-queries is known as ______
MongoDB supports the creation of user-defined ascending/descending indexes on a ______ field of a document.
MongoDB uses ______ indexes to index the content stored in arrays.
The MongoDB ______ supports the backing up and restoring of MongoDB deployments.