Transaction processing enables a program to treat a database operation, or set of operations, as single operation. This is known as a(n) ________ or a(n) ________.
a. atomic operation, unique operation.
b. unique operation, transaction.
c. atomic operation, transaction.
d. None of the above.
c. atomic operation, transaction.
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After upgrading to Windows Vista, a client states that the run command no longer appears on the Start menu: Which of the following is the reason the user cannot see the run command?
A. The user must be an administrator to have access to the run command. B. The Vista run command is not installed by default during an upgrade. C. Vista has replaced the run command with the Power Shell. D. The run command is not displayed by default on the start menu.
Constant variables:
a. Can be assigned values in executable statements. b. Do not have to be initialized when they are declared. c. Can be used to specify array sizes, thereby making programs more scalable. d. Can be used to specify array sizes, but this makes programs harder to understand.