Answer:
b. data entry slows as every INSERT , UPDATE, or DELETE statement must also update every index.
Explanation:
This process help to improve the speed of get data , it takes each element in the indexed column and save the location to get faster the data. But if you index every attribute in a table it going to take a lot of time locating each column in the respective index in each query(update, delete and insert). For that reason is necesary be carefull with this process and only put index in the relevant columns
Answer:
ssume that,
Maximum “students” count can be 10.
*Driver Class*
*Solution class*
import java.util.*;
class Student {
private String name;
private int rollNo;
public String getName() {}
public void setName(String name) {}
public int getRollNo() {}
public void setRollNo(int rollNo) {}
};
class ClassRoom {
private int i;
private Student[] students;
public void addStudent(String name, int rollNo) {}
public Student[] getAllStudents() {}
};
Voyager
Shortly after the Pioneers made their flybys, the Voyager1 and Voyager 2 probes followed. They made many important discoveries aboutJupiter and Saturn, including rings around Jupiter and the presence ofvolcanism on Jupiter's moon, Io. Voyager went on to make the first flybys ofUranus, where it discovered 10 new moons, and Neptune, where it found thatNeptune actually weighs less than astronomers thought. Both Voyager crafts have enough power to keep transmitting radio signals until at least 2025, and are now exploring the very edge of the solar system and beginning of interstellar space. Voyager 2 is currently the farthest man-made object from Earth, at more than a hundred times the distance from the Earth to the sun, and more than twice as far as Pluto.
I hope this helps chu
