A key component of a DBMS is the ____________________ , the part of the program that actually stores and retrieves data.
Fill in the blank(s) with the appropriate word(s).
database engine
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If you have already removed a character (in char variable ch) from the input stream, you can apply a member function of cin to the variable ch to return it to the input stream. Which of these does this task?
a)``` cin.get(ch); ``` b)``` cin.put(ch); ``` c)``` cin.peek(ch); ``` d)``` cin.putback(ch); ```
A process waiting for a spin lock __________.
a) blocks b) busy-waits for the spin lock. c) busy-waits for a finite amount of time, then it blocks d) preempts the lock holder if its priority is higher than the lock holder's priority
COGNITIVE ASSESSMENT What is the term for the process of comparing data with a set of rules or values to find out if the data is correct?
A. query B. verification C. procedure D. validation
Which type of memory can support quad, triple, and dual channels?
A. DDR3 B. DDR2 C. DDR D. DDR4