The Undo button allows you to reverse up to ____ previous actions, one at a time.
A. 1
B. 10
C. 100
D. 1,000
Answer: C
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In the expression (j > 0 && j+1 == 10), which operator executes last?
a. > b. && c. + d. ==
____ usually expires after a limited time if you don't purchase the full commercial version.
A. Freeware B. Open source software C. Shareware D. Demoware
What is wrong with the following code fragment? What are three distinct ways it could be changed to remove the flaw?
``` count = 50; while (count >= 0) { System.out.println(count); count = count + 1; } ```
Create an XML document and an XML Schema for the Hotel Schema given in the Exercises at the end of Chapter 4. Now attempt to write XQuery expressions for Exercises 6.7 – 6.26.
6.7 List full details of all hotels. 6.8 List full details of all hotels in London. 6.10 List all double or family rooms with a price below £40.00 per night, in ascending order of price. 6.12 How many hotels are there? 6.13 What is the average price of a room? 6.14 What is the total revenue per night from all double rooms? 6.15 How many different guests have made bookings for August? 6.16 List the price and type of all rooms at the Grosvenor Hotel. 6.17 List all guests currently staying at the Grosvenor Hotel. 6.22 List the number of rooms in each hotel. 6.23 List the number of rooms in each hotel in London.