________ is the process of selecting two or more worksheets
Fill in the blank(s) with correct word
Grouping
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Calculate the cardinality and minimum cost for each of the following Projection operations:
? 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 P1: ? hotelNo (Hotel) P2: ? hotelNo (Room) P3: ? price (Room) P4: ? type (Room) P5: ? hotelNo, price (Room)
The _______ method returns the number of elements in an ArrayList.
a) length b) lengthOf c) numberElements d) size
What is the term for a problem or malfunction in a computer program?
A) error B) bug C) fault D) glitch
When ____________________ occur between two styles in the same location, the style that is lower in the styles list usually takes precedence.
Fill in the blank(s) with the appropriate word(s).