A(n) ________ is the intersection of a row and a column
Fill in the blank(s) with correct word
cell
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Which statement prints the floating-point value 123.456 right justified with a field width of 10?
a. System.out.printf("%d10.3", 123.456); b. System.out.printf("%10.3d", 123.456); c. System.out.printf("%f10.3", 123.456); d. System.out.printf("%10.3f", 123.456);
A set of named constants that start with the value 0 for the first constant and increment by 1 for each subsequent constant can be declared as a(n) ________.
a. class b. enum c. enumeration d. None of the above.
Calculate the cardinality and minimum cost for each of the following Selection operations:
Using the Hotel schema, assume the following indexes exist: ? a hash index with no overflow on the primary key attributes, roomNo/hotelNo in Room; ? a clustering index on the foreign key attribute hotelNo in Room; ? a B + -tree index on the price attribute in Room; ? a secondary index on the attribute type in Room. nTuples(Room) = 10000 bFactor(Room) = 200 nTuples(Hotel) = 50 bFactor(Hotel) = 40 nTuples(Booking) = 100000 bFactor(Booking) = 60 nDistinct hotelNo (Room) = 50 nDistinct type (Room) = 10 nDistinct price (Room) = 500 min price (Room) = 200 max price (Room) = 50 nLevels hotelNo (I) = 2 nLevels type (I) = 2 nLevels price (I) = 2 nLfBlocks price (I) = 50 S1: ? roomNo=1 ? hotelNo=1 (Room) S2: ? type=‘D’ (Room) S3: ? hotelNo=2 (Room) S4: ? price>100 (Room) S5: ? type=‘S’ ? hotelNo=3 (Room) S6: ? type=‘S’ ? price < 100 (Room)
The ________ function replaces the current process by running a shell command.
Fill in the blank(s) with the appropriate word(s).