When interpreting SQL code, which of the following is the most basic interpretation?

To use an expert system, the person using the system needs to know the steps of the reasoning process that leads to the answer.

Your friend, a pharmacist, uses a computerized information system that stores knowledge and makes inferences/recommendations concerning drug interactions. Your friend is using a(n):

Briefly describe how the ArrayList class differs from a plain array in Java. Mention at least two differences.

29.  Consider the following inheritance example: class Animal {    public void speak() {        System.out.println(“Animal speaks”);    }} class Dog extends Animal {    @Override    public void speak() {        System.out.println(“Dog barks”);    }} public class Test {    public static void main(String[] args) {        Animal a = new Dog();        a.speak();    }}What is the output? ____________

Suppose Person also has a no‑argument constructor that sets name = “Unknown”. Write a Student no‑arg constructor that:·         Calls the no‑arg superclass constructor.·         Sets gpa to 0.0. public class Person {    private String name;        public Person() {        this.name = “Unknown”;    }     public Person(String name) {        this.name = name;    }     public String getName() {        return name;    }}public class Student extends Person {    private double gpa;     public Student(String name, double gpa) {        super(name);        this.gpa = gpa;    }     public double getGpa() {        return gpa;    }}

In Java, the process of writing an object’s state to a file is called [BLANK-1], and reading it back into memory is called [BLANK-2].

21.   Define a simple class Course with: ·         Private fields: String name, int credits. ·         A constructor Course(String name, int credits). ·         Getter methods for both fields.

Write a Java statement that creates an ArrayList of Double named measurements and adds the value 3.14 to it.Show all work and proper Java syntax.

Which of the following are true about inheritance in Java?