A USB device used to transfer photos from the memory card to a hard drive is called a _____.
A. photo reader
B. flash drive reader
C. card reader
D. USB reader
Answer: C
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Which type of merge statement only combines rows that exist in two result sets?
A. UNION B. EXCEPT C. INTERSECT D. JOIN
The IAL requires the agent to advance the arrow for the alphabetically earliest URL. Show that the IAL is effective by explaining how an agent would know which list has the “alphabetically earliest” URL, and so must have its arrow advanced.
What will be an ideal response?
Specify the following additional queries on the database of Figure 3.5 in SQL. Show the query results if applied to the database of Figure 3.6.
(a) For each department whose average employee salary is more than $30,000, retrieve the department name and the number of employees working for that department. (b) Suppose we want the number of male employees in each department rather than all employees (as in Exercise 5.4a). Can we specify this query in SQL? Why or why not?
The current directory is the root directory. To remove the Util directory from drive C, enter
A) ERA C:\UTIL B) DEL C:\UTIL C) RD C:\UTIL D) RD C:\