The expression static_cast(6.9) + static_cast(7.9) evaluates to ____.
A. 13
B. 14
C. 14.8
D. 15
Answer: A
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where Emp21 is stored at site B and Emp22 is stored at site C. A query at site A wants the names of all managers in the accounting department whose salary is greater than their age. Design a plan for this query, using the assumptions on page 704 for table and attribute sizes. Assume that the items in the Age column are two bytes long.
Suppose that we have a relation Employee2 (SSnum, Name, Salary, Age, Title, Location) which is partitioned as Emp21 (SSnum, Name, Salary) Emp22 (SSnum, Title, Age, Location) What will be an ideal response?
Random access files are more effective than sequential files for:
a. Instant access to data. b. Updating data easily. c. Inserting data into the file without destroying other data. d. All of the above.
The operation in a computer program that transmits data from an outside source to the program is:
a. pseudocode b. input c. output d. the keyboard
Over the past 3 years, a cloud service has been unavailable for a total of 36 hours, primarily due to a denial of service attacks. Additionally, the physical server hosting the cloud service crashed once. It took the cloud provider 4 days to replace the physical server and for the cloud service to become operational again. Based on these statistics over the past 3 years, What is the availability rating of the cloud service?
What will be an ideal response?