In a real-world environment, changing granularity requirements might dictate changes in primary key selection, and those changes might ultimately require the use of surrogate keys.
Explanation:
A surrogate key is a unique identity as an object or entity. It is used as an object in the database and as an entity in the modern world. Surrogate key is not a natural key hence it cannot be derived from application data.
Advantages of using surrogate key:
- They are unique
- They have uniform rules
- It allows unlimited values
- It stands the test of time
Its False, just took the test I chose true buh it told me I was wrong so iss gotta be false.
Answer:
is a chart that allows the reader to follow a particular path and arrive at an outcome.
Explanation:
A decision tree is a chart i.e tree like diagram that allow a user to make choice on the option to partake in. Decision trees are also used for classification and for making process
The decision tree usually have a root as the node. Then each option/decision is represented as a branch out extending from the previous node.
For Instance, when a coins is toss three times; a decision tree gives us the possible path that is available to choose from.
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() {}
};
Answer:
Segmentation
Explanation:
The analysis tool that could be used to analyze the behavior of new consumers v/s returning consumers on the website.
Segmentation is a process that allows us to isolate the data or its subsets into different segments on the basis of personal traits, age, behavior , income, etc in order to analyze and examine so as to provide a correct response to the trends in the business such as particular advertisement to a particular group in order to get their attention to the current trends.
