What is the typical drive letter for the hard drive?
A. A:
B. B:
C. C:
D. D:
Answer: C
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What will be an ideal response?
For each of the following queries, state whether the query is valid and for the valid ones should how each of the queries would be mapped onto a query on the underling base tables.
Consider the following view defined on the Hotel schema: CREATE VIEW HotelBookingCount (hotelNo, bookingCount) AS SELECT h.hotelNo, COUNT(*) FROM Hotel h, Room r, Booking b WHERE h.hotelNo = r.hotelNo AND r.roomNo ? b.roomNo GROUP BY h.hotelNo; (a) SELECT * FROM HotelBookingCount; (b) SELECT hotelNo FROM HotelBookingCount WHERE hotelNo = ‘H001’; (c) SELECT MIN(bookingCount) FROM HotelBookingCount; (d) SELECT COUNT(*) FROM HotelBookingCount; (e) SELECT hotelNo FROM HotelBookingCount WHERE bookingCount > 1000; (f) SELECT hotelNo FROM HotelBookingCount ORDER BY bookingCount;
A variable whose meaning is confined to a method definition is called an/a
(a) instance variable (b) local variable (c) global variable (d) none of the above
What is the output of the following code segment?
``` for (k = 5; k > 0; k--) { for (i = 0; i < 5-k; i++) cout << '.'; for (j=0; j < 2*k-1; j++) cout << 'B'; cout << endl; } ```