answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Viktor [21]
2 years ago
8

The symbol asterisk(*) in a select query retrieves​

Computers and Technology
1 answer:
Natali [406]2 years ago
3 0

Answer:

The answer to this question is given below in the explanation section.

Explanation:

The symbol asterisk (*) in a select query retrieve all result of column in the table. For example, table named "employee" has three column such as <em>id, name, address</em>.

To apply the symbol asterisk (*) in select querry select all the columns in the result.

for example:

select * employee;

this query statement selects all columns of table "employee" in the result.

You might be interested in
The major result of treating 1-butyne with 6M aqueous NaOH would be:_______.A. the production of an alkene.B. the production of
andriy [413]

Answer:

D. nothing, as the alkyne would not react to an appreciable extent.

Explanation:

Nothing, as the alkyne would not react to an appreciable extent.

6 0
2 years ago
Design two subclasses of Employee…SalariedEmployee and HourlyEmployee. A salaried employee has an annual salary attribute. An ho
avanturin [10]

Answer:

Complete answer to above question is given below.

Explanation:

Employee.java

import java.util.Date;

public class Employee

{

private int empID;

private Address address;

private Name name;

private Date date;

public Employee()

{

}

public Employee(int empID)

{

this.empID = empID;

}

public int getEmpID()

{

return empID;

}

public void setEmpID(int empID)

{

this.empID = empID;

}

public Address getAddress()

{

return address;

}

public void setAddress(Address address)

{

this.address = address;

}

public Name getName()

{

return name;

}

public void setName(Name name)

{

this.name = name;

}

public Date getDate()

{

return date;

}

public void setDate(Date date)

{

this.date = date;

}

}

Name.java

public class Name {

private String name;

public Name(String name) {

super();

this.name = name;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

}

Address.java

public class Address {

private String addr;

public Address(String addr) {

super();

this.addr = addr;

}

public String getAddr() {

return addr;

}

public void setAddr(String addr) {

this.addr = addr;

}

}

SalariedEmployee.java

public class SalariedEmployee extends Employee {

private double annualSalary;

public SalariedEmployee(double annualSalary) {

super();

this.annualSalary = annualSalary;

}

public double getAnnualSalary() {

return annualSalary;

}

public void setAnnualSalary(double annualSalary) {

this.annualSalary = annualSalary;

}

}

HourlyEmployee.java

public class HourlyEmployee extends Employee {

private double hourlyrate;

private double hours_worked;

private double earnings;

public HourlyEmployee(double hourlyrate, double hours_worked) {

super();

this.hourlyrate = hourlyrate;

this.hours_worked = hours_worked;

}

public double getEarnings()

{

if(hours_worked<=40)

{

earnings=hours_worked*hourlyrate;

}

else if(hours_worked>40)

{

earnings=40*hourlyrate+(hours_worked-40)*hourlyrate*1.5;

}

return earnings;

}

public double getHourlyrate() {

return hourlyrate;

}

public void setHourlyrate(double hourlyrate) {

this.hourlyrate = hourlyrate;

}

public double getHours_worked() {

return hours_worked;

}

public void setHours_worked(double hours_worked) {

this.hours_worked = hours_worked;

}

public void setEarnings(double earnings) {

this.earnings = earnings;

}

Test.java

import java.util.Date;

public class Test {

public static void main(String[] args) {

System.out.println("_____Salaried Employee_____");

SalariedEmployee se=new SalariedEmployee(50000);

se.setEmpID(1234);

se.setName(new Name("Williams"));

se.setAddress(new Address("4,Richmond Street"));

se.setDate(new Date("Oct-11-2014"));

System.out.println("Employee Id :"+se.getEmpID());

System.out.println("Employee Name :"+se.getName().getName());

System.out.println("Employee Address :"+se.getAddress().getAddr());

System.out.println("Joining Date :"+se.getDate());

System.out.println("The Annual Salary :"+se.getAnnualSalary());

System.out.println("\n_____Hourly Employee_____");

HourlyEmployee he1=new HourlyEmployee(8.5,39);

he1.setEmpID(4567);

he1.setName(new Name("Kane"));

he1.setAddress(new Address("5,lake View Road"));

he1.setDate(new Date("Nov-12-2015"));

System.out.println("Employee Id :"+he1.getEmpID());

System.out.println("Employee Name :"+he1.getName().getName());

System.out.println("Employee Address :"+he1.getAddress().getAddr());

System.out.println("Joining Date :"+he1.getDate());

System.out.println("The Earnings Of An HourlyEmployee :"+he1.getEarnings());

System.out.println("\n_____Hourly Employee_____");

HourlyEmployee he2=new HourlyEmployee(9.5,47);

he2.setEmpID(1111);

he2.setName(new Name("John"));

he2.setAddress(new Address("17,Villey Parley Street"));

he2.setDate(new Date("Dec-13-2011"));

System.out.println("Employee Id :"+he2.getEmpID());

System.out.println("Employee Name :"+he2.getName().getName());

System.out.println("Employee Address :"+he2.getAddress().getAddr());

System.out.println("Joining Date :"+he2.getDate());

System.out.println("The Earnings Of An HourlyEmployee :"+he2.getEarnings());

}

}

Output:

_____Salaried Employee_____

Employee Id :1234

Employee Name :Williams

Employee Address :4,Richmond Street

Joining Date :Sat Oct 11 00:00:00 IST 2014

The Annual Salary :50000.0

_____Hourly Employee_____

Employee Id :4567

Employee Name :Kane

Employee Address :5,lake View Road

Joining Date :Thu Nov 12 00:00:00 IST 2015

The Earnings Of An HourlyEmployee :331.5

_____Hourly Employee_____

Employee Id :1111

Employee Name :John

Employee Address :17,Villey Parley Street

Joining Date :Tue Dec 13 00:00:00 IST 2011

The Earnings Of An HourlyEmployee :479.75

7 0
2 years ago
Which type of network topology lets you see which end devices are connected to which intermediary devices and what media is bein
m_a_m_a [10]

Answer:

Star Topology

Explanation:

Star network topologies are common in home networks, where the central connection point may be a router, switch, or network hub. Unshielded Twisted Pair (UTP) Ethernet cabling is typically used to connect devices to the hub, though coaxial cable or optical fiber may also be employed.

5 0
2 years ago
Write a function called add_tuples that takes three tuples, each with two values, and returns a single tuple with two values con
Leni [432]

In Python, tuples are indeed a data structure that also stores an ordered sequence of unchanging values, and following are the Python program to the given question:

Program Explanation:

  • Defining a method "add_tuples" that takes three variables "firstTuple, secondTuple, thirdTuple" into the parameter.
  • After accepting the parameter value a return keyword is used that adds a <em><u>single tuple with two values</u></em> and returns its value into the form of (x,y).
  • Outside the method, two print method is declared that calls the above method by passing value into its parameters.

Program:

def add_tuples(firstTuple, secondTuple, thirdTuple):#defining a method add_tuples that takes three variable in parameters

   return firstTuple[0]+secondTuple[0]+thirdTuple[0],firstTuple[1]+secondTuple[1]+thirdTuple[1] #using return keyword to add value

print(add_tuples((1,4), (8,3), (14,0)))#defining print method that calls add_tuples method takes value in parameters

print(add_tuples((3,2), (11,1), (-2,6)))#defining print method that calls add_tuples method takes value in parameters    

Output:

Please find the attached file.  

Learn more:

brainly.com/question/17079721

4 0
2 years ago
Which statements describe best practices for aligning text? check all that apply
kiruha [24]

Answer: *use the last column for text with multiple lines.

*use an indent marker to indent the first line of a paragraph.

*use a table if text in multiple columns have multiple lines.

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • Which of the following statements about crane hand signal training are true? A. Both statements are true about crane hand signal
    5·1 answer
  • Which are methods used to improve reading fluency? Check all that apply. Practicing with a weak reader listening to a fluent rea
    5·2 answers
  • _____ computing refers to a computing environment that is always present, can feel our surroundings, and-based on who we are, wh
    8·1 answer
  • Given three dictionaries, associated with the variables, canadian_capitals, mexican_capitals, and us_capitals, that map province
    11·1 answer
  • Which of the following facts determines how often a nonroot bridge or switch sends an 802.1D STP Hello BPDU message?
    14·1 answer
  • Raj, a recent graduate, has recently joined your organization as a Junior Business Analyst. He has been asked to conduct a Feasi
    11·1 answer
  • Polygon transform (25 points). Write a library of static methods that performs various geometric transforms on polygons. Mathema
    12·1 answer
  • Write the state of the elements of each of the following arrays after each pass of the outermost loop of the selection sort algo
    11·1 answer
  • E xercise 17.2.4: The following is a sequence of undo-log records written by two transactions T and U: &lt; START T&gt;; ; &lt;
    15·1 answer
  • Why are passive readers most likely to have difficulty focusing on a text?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!