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In the given Venn diagram, different animals are represented by different areas. 'A' denotes 'dogs', 'B' denotes 'cats', 'C' denotes 'fish', 'D' denotes 'mongooses, 'E' denotes 'rats', and 'F' denotes 'rabbits'. Which area represents the group of only dogs, fishes,  and mongooses?
If ‘<’ denotes ‘-’, ‘+’ denotes ‘+’, ‘-’ denotes ‘=’ ‘=’ denotes ‘<’ and ‘x’ denotes ‘>’, then , '>' denotes '>' which of the following statement is true?
The figure shows: 1. Rectangle denotes male 2. Circle denotes urban 3. Square denotes educated 4. Tringle denotes civil servant The number which denotes Uneducated Urban Male:
In a database system, unique timestamps are assigned to each transaction using Lamport’s logical clock. Let TS(T1) and TS(T2) be the timestamps of transactions T1 and T2 respectively. Besides, T1 holds a lock on the resource R, and T2 has requested a conflicting lock on the same resource R. The following algorithm is used to prevent deadlocks in the database system assuming that a killed transaction is restarted with the same timestamp. If TS(T2) < TS(T1) then T1 is killed else T2 waits. Assume any transaction that is not killed terminates eventually. Which of the following is TRUE about the database system that uses the above algorithm to prevent deadlocks?
Consider the following database schedule with two transactions, T1 and T2. S = r2(X); r1 (X); r2(Y); w1(X); r1 (Y); w2(X); a1; a2 where ri(Z) denotes a read operation by transaction Ti on a variable Z, wi(Z) denotes a write operation by Ti on a variable Z and ai denotes an abort by transaction Ti. Which one of the following statements about the above schedule is TRUE? 
In timestamp ordering protocol, suppose that the transaction Ti issues read(Q) and TS(Ti)
In timestamp ordering protocol, suppose that the transaction Ti issues write(Q) and TS(Ti)
If 'A' denotes 'addition', 'B' denotes 'multiplication', 'C' denotes 'subtraction', and 'D' denotes 'division', then what will be the value of the following expression? 24 C 36 D 9 A 18 B (75 D 15) C 30 = ?
If A denotes 'addition', B denotes 'multiplication', C denotes 'subtraction', and D denotes 'division', then what will be the value of the following expression? 17 C 12 A (6 B 4) D 8 A 15 D 5
If A denotes 'addition', B denotes 'multiplication', C denotes 'subtraction', and D denotes 'division', then what will be the value of the following expression? 5 B 5 B 3 A 14 C (28 D 7) A 5 B (13 C 9)