The ____ attribute is used to create a ScreenTip for links.
A. navigation
B. target
C. title
D. flag
Answer: C
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Again, using the Hotel schema, draw a relational algebra tree for each of the following queries and use the heuristic rules given in Section 23.3.2 to transform the queries into a more efficient form:
(a) SELECT r.roomNo, r.type, r.price FROM Room r, Booking b, Hotel h WHERE r.roomNo = b.roomNo AND b.hotelNo = h.hotelNo AND h.hotelName = ‘Grosvenor Hotel’ AND r.price > 100; (b) SELECT g.guestNo, g.guestName FROM Room r, Hotel h, Booking b, Guest g WHERE h.hotelNo = b.hotelNo AND g.guestNo = b.guestNo AND h.hotelNo = r.hotelNo AND h.hotelName = ‘Grosvenor Hotel’ AND dateFrom >= ‘1-Jan-04’ AND dateTo <= ‘31-Dec-04’;
Which of the following is NOT one of the functions of a multifunction device?
A) Projecting B) Copying C) Scanning D) Printing
The visual cue in the Relationships window that indicates tables are related by connecting common fields.
What will be an ideal response?
All of the following tests of controls will provide evidence about the physical security of the computer center except
A. review of fire marshal records B. review of the test of the backup power supply C. verification of the second site backup location D. observation of procedures surrounding visitor access to the computer center