Which of the following is NOT true about databases?
A) A database eliminates the need for a paper-based system.
B) Information is data that has been manipulated.
C) In business, data is collected and used for decision making.
D) Databases are used for operational processing and for analytical purposes.
A
You might also like to view...
Analyze the following code.
``` import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.stage.Stage; public class Test extends Application { @Override // Override the start method in the Application class public void start(Stage primaryStage) { // Create a button and place it in the scene Button btOK = new Button("OK"); btOK.setOnAction(e -> System.out.println("OK 1")); btOK.setOnAction(e -> System.out.println("OK 2")); Scene scene = new Scene(btOK, 200, 250); primaryStage.setTitle("MyJavaFX"); // Set the stage title primaryStage.setScene(scene); // Place the scene in the stage primaryStage.show(); // Display the stage } /** * The main method is only needed for the IDE with limited JavaFX * support. Not needed for running from the command line. */ public static void main(String[] args) { launch(args); } } ``` a. When clicking the button, the program displays OK1 OK2. b. When clicking the button, the program displays OK1. c. When clicking the button, the program displays OK2. d. The program has a compile error, because the setOnAction method is invoked twice.
A virtualized machine can be seen as a complete system consisting of the physical machine (hardware), a hypervisor, and one or more virtual machines, each with its own set of virtual hardware, a supervisor (operating system) and ________________.
Fill in the blank(s) with the appropriate word(s).
A sequence of codes or instructions is called __________.
A. software B. memory C. an interconnect D. a register
Answer the following statements true (T) or false (F)
1. Many programs exhibit both temporal and spatial locality for both instruction and data access. 2. It has been found that data access patterns generally show a greater variance than instruction access patterns. 3. When instruction execution involves fetching the instruction from memory and, during execution, accessing one or more data operands from one or more regions of memory, there is a dual locality of data spatial locality and instruction spatial locality. 4. Cache is a form of external memory.