When the last shared_ptr to a resource is destroyed, all weak_ptrs to that resource .
a. are destroyed
b. are set to NULL
c. are not affected
d. can still access the resource
b. are set to NULL
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Subtractive primary colors are:
a. purple, mauve, blue b. yellow, brown, green c. cyan, magenta, gray d. magenta, cyan, yellow e. yellow, cyan, purple
Which column alias will cause an error?
A) SELECT last_name AS lname FROM employees; B) SELECT last_name AS Last Name FROM employees; C) SELECT last_name "Last Name" FROM employees; D) SELECT last_name lname FROM employees;
In a binary search tree, the elements in the left subtree of the root are __________________ the root element.
a) greater than b) less than c) greater than or equal to d) less than or equal to e) equal to
Make a comparison of the sequences of operations of the transactions T and U and under optimistic concurrency control
What will be an ideal response?