The data dictionary may be used to create:
A) screens.
B) reports.
C) forms.
D) All of the above.
D) All of the above.
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Explain the concepts of serial, nonserial, and serializable schedules. State the rules for equivalence of schedules.
What will be an ideal response?
Create a directory called linux in your home directory. What command line did you use? What command would you use to create the directories called memos and personal in your home directory?
What will be an ideal response?
Answer the following statements true (T) or false (F)
1. Viewing each layer of abstraction as an independent black box is useful because it allows you to work with the layers one at a time. 2. The operating system’s user interface, sometimes called the shell, provides a mechanism for the user and application programs to communicate directly with the hardware. 3. The operating system’s file management function, sometimes called the file system, incorporates routines that allow the user or programmer to create, delete, modify, and manipulate files logically, by name. 4. The operating system’s device management function is responsible for efficiently managing the system’s memory and processor. 5. Processor (or process) management is concerned with efficiently managing the processor’s time and main memory space.
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?As the accompanying figure illustrates, the _____ approach causes the changeover from the old system to the new system to occur immediately when the new system becomes operational.?
A. ?phased operation B. ?parallel operation C. ?pilot operation D. ?direct cutover