The purpose of a report is to provide an easy-to-use data entry interface.
Answer the following statement true (T) or false (F)
False
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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;
When the machine cycle performs the fetch step, it is ________
A) retrieving an instruction from the main memory B) processing a command in the ALU C) storing the results D) translating an instruction into a computer command
What is another name for static tunnels?
A. private tunnels B. configured tunnels C. automatic tunnels D. self-managed tunnels
You can use the mouse to move an image, you cannot use the directional arrow keys
Indicate whether the statement is true or false