In databases, null values and zero values are not equivalent. A null value represents the absence of any value, while zero is a value. Null values are used to indicate missing or unknown data, whereas zero is a specific numerical value. In SQL, the comparison of null values with any other value or null value returns a null result.
For example, if we try to compare a null value with zero using the "=" operator, the result will be null, indicating that the comparison is unknown. To handle null values in databases, we can use the "IS NULL" or "IS NOT NULL" operators to check whether a value is null or not. In summary, null values are distinct from zero values in databases, and they should be treated differently in database operations.
.
Hi! I'm happy to help you with your question. The answer is:
a. True
In databases, null values are not equivalent to zero. Null values represent the absence of any value or data in a specific field, whereas zero is a numeric value. It is important to understand this distinction when working with databases, as treating null values and zero as equivalent may lead to incorrect results in queries or calculations.
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what is the definition of assiduous?
Answer:
showing great care and perseverance.
a c program to check the greaster number among the two entered number using if else statement
Answer:
#include <stdio.h>
int main(void) {
int number1, number2;
printf("Enter first number: ");
scanf("%d", &number1);
printf("Enter second number: ");
scanf("%d", &number2);
if (number1 > number2) {
printf("%d is greater than %d!", number1, number2);
} else if (number2 > number1) {
printf("%d is greater than %d!", number2, number1);
} else {
printf("%d is equal to %d!", number1, number2);
}
}
I need help writing the algorithm I know how to do the flow chart for the first one but I’m not sure if the second question is a for loop
Answer:
The algorithm is as follows:
(a) Sales and commission
1. Start
2. Input Sales
3. Commission = 0.30 * Sales
3. If sales >= 4000.00 then
3.1 Commission = 0.60 * Sales
4. End If
5. Print Commission
6. Stop
(b) Amount of Rainfall
1. Start
2. Days = 1
3. Total = 0.0
4. While Days <= 31
4.1. Input Rainfall
4.2. Total = Total + Rainfall
4.3. Days = Days + 1
4.4. End If
5. Print Total
6. Stop
See attachment for flowchart
Explanation:
(a) Sales and commission
This begins the algorithm
1. Start
This gets sales from the user
2. Input Sales
This calculates the commission based on 30% (i.e. for sales < 4000)
3. Commission = 0.30 * Sales
This checks if sales is greater than or equal to 4000
3. If sales >= 4000.00 then
This calculates the commission as 60% of Sales
3.1 Commission = 0.60 * Sales
This ends the if condition
4. End If
This prints the calculated commission
5. Print Commission
This ends the algorithm
6. Stop
(b) Amount of Rainfall
This begins the algorithm
1. Start
This initializes the number of days to 1
2. Days = 1
This initializes total rainfall to 0
3. Total = 0.0
The following while loop is repeated until day 31st
4. While Days <= 31
This gets input for Rainfall from the user
4.1. Input Rainfall
This calculates the total rainfall
4.2. Total = Total + Rainfall
This increments the number of days
4.3. Days = Days + 1
This ends the if statement
4.4. End If
This prints the total rainfall
5. Print Total
This ends the algorithm
6. Stop
Your task is to identify three or more ways that big data is being collected on a regular basis, including one data collection method for each of the following categories:
Data collection on the internet
Digital data collection from a source other than the internet
Analog (non-digital) data collection being performed in physical places
For each of these data collection practices: Describe how the data collection occurs. Analyze the data collection process by answering the following five questions in complete sentences and to the best of your ability:
What data is being collected?
Why is this data being collected?
What are the likely benefits of this data collection?
How might this data collection cause harm?
How likely is it that this data can be accessed by others?
You may use the internet or any other available resources to identify and analyze these data collection strategies.
Answer:
Data is one of the most valuable resources today's businesses have. ... There are various data-gathering methods you can use with the help of your ... When it comes to data businesses collect about their customers, ... Third-party data offers much more scale than any other type of data, ... Big White Cursor.
Explanation:
The data is one of the most essential and the most important aspects of the modern world and s collected each and every hour. The data forms an essential element of the internet and digital media.
The data is held soly responsible for the generation of numerous possibilities.The data collected can be used for further processing and creation of new contents.Learn more about the tasks to identify.
brainly.com/question/20688743.
what is processing unit?
Answer:
A central processing unit, also called a central processor, main processor or just processor, is the electronic circuitry within a computer that executes instructions that make up a computer program.
Explanation:
Answer:
CPU is processing unit.
The main computer case containing the central components of a personal computer is central processing unit.
time to throw poggers xqc time to throw pogchamp time to throw pogchamp time to throw pogchamp time to throw pogchamp time to throw houhouhouhou time to throw poogcham
Answer:
yep
Explanation:
pls answer i need to turn it in today!!
In computing flowcharts how are decisions represented?
What is the command used most for decisions?
Answer:
See Explanation
Explanation:
How decisions are represented?
In flowcharts, decisions are represented using diamond shapes (see attachment)
Decisions could be conditional statement or repetition operations which may have the form of loops or iterations.
Either of theses are represented using the diamond shapes.
Take for instance:
To check if a is greater than b... Simply write if a > b i the diamond box
Command used for most decisions
Most decisions are conditional statements; hence, the if command is often used for decisions.
The shapes of AND, OR, and NOR gates have something in common. What is it and why do you think they share that feature?
16
Mackenzie is the network administrator for a large security corporation. What task
might Mackenzie perform as part of her job?
O answering calls from customers who need help
9
developing a website for the corporation
12
connecting a new computer to the network
15
testing a new video game before its release
Answer:
Connecting a new computer to the network.
Answer:
C. Connecting a new computer to the network
Explanation:
That is part of the job and the test say it is correct.
You can use this keyboard shortcut to toggle the visibility of the command line. If for some reason your command line is hidden from the drawing area, then use this keyboard shortcut to bring it back *
Answer:
Ctrl + 9
Explanation:
You can use this keyboard shortcut to toggle the visibility of the command line
Internet and global communication came with challenges and opportunities, give example of opportunities from real life?
Answer:
Employment - The internet has allowed for people to be able to hire others from all over the globe instead of just in the country that they are based. The employers get access to skilled manpower from more than one place and more often than not, this kind of hiring reduces labor costs. Access to more markets - The internet and global communication have led to prosperity for a lot of people as they are now able to buy and/ or sell goods to many more markets. Think for instance, about the Chinese vendors selling on eBay or Amazon. The internet has allowed them to b able to sell to people all over the world instead of just China. Education : The internet also benefits education as students are now able to get help from other people by logging onto the net. People are also able to study in Universities that are far away from where they are based thanks to the internet allowing for instantaneous communication.What are the main purposes of an operating system?
Answer:
An operating system has three main functions: (1) manage the computer's resources, such as the central processing unit, memory, disk drives, and printers, (2) establish a user interface, and (3) execute and provide services for applications software.
the guest would like to convert his 100 dollar to peso.How much will the guest receive if the exchange rate is 1 dollar=Php 50.50?
Answer:
the answer is $100
I hope it helps
have a nice day
#Captainpower :~
Which finger is used to press SHIFT key while typing!
A. Little finger
B. Thumb
C. Index finger
D. Ring Finger
Answer:
Little Finger (A)
Explanation:
Documental acerca de los principales materiales que se emplean en la fabricación de medios técnicos utilizados en una oficina.
Answer:
Los equipos técnicos utilizados en una oficina y los principales materiales utilizados en su fabricación son;
Equipo de oficina [tex]{}[/tex] Material utilizado en la fabricación
1) Impresoras; [tex]{}[/tex] Acero, aluminio, alambres de cobre, plástico, rodillos
2) Monitor de computadora; [tex]{}[/tex] Pantalla de vidrio, plástico, cables, placas de circuito, resortes
3) Escáneres; [tex]{}[/tex] Alfombra compuesta, mesa de vidrio, carcasa de plástico, cables
4) Copiador; [tex]{}[/tex] Carcasa de plástico, contenedor de tóner, placa de vidrio, cables de alimentación
5) Proyector; [tex]{}[/tex] Lente de vidrio y carcasa de metal para lámpara, cables de alimentación
6) Desfibradora; [tex]{}[/tex] Engranajes de plástico, correa de cadena de metal, rodamientos
Explanation:
The answer is not border
Answer:
#footer {
border-top: 1px solid rgba(0, 0, 0, 0.3);
background: rgba(0, 0, 0, 0.25);
box-shadow: inset 0 1px rgba(255, 255, 255, 0.3);
height: 40px;
}
Explanation:
hope this helps,
Have a great day
i think i have a virus on my computer what am i supposed to do
Answer:
call like a phone or computer company and ask wjat thry can do
The equipment that makes sewing easier and faster is ________
Answer:
its a sewing machine
Explanation:
What is the output of this Python code?
def guess(a, b, c):
if a > b and a < c:
print(True)
else:
print(false)
X = 45
y = 31
z = 78
guess(x, y, z)
Answer:
True
Explanation:
in function guess:- a = x; b = y; c = z
so 45 > 31 AND 45 < 38
since both the stements are true
True is printed
Select all the correct answers.
Daniel is an app developer. He is working on an app for a retail store selling sports goods. The store manager explains that he would like customers to be alerted whenever there is a sale at the store. Interested customers would also be able to send an immediate response and book items they like from their mobile devices. Which statements about the use of the app are true?
It will make shopping easy.
It will enable quick transactions.
It will enable safety.
It will manage health.
It will save time.
Please I really need it because it will decides my grade.
Answer:
it will make shopping easy
Explanation:
The app will allow customers to shop with their phone instead of locating to the store. It also keeps the customers informed of events and sales for shopping.
What is the name of tool
Answer:
bro the pic is hazy
Explanation:
but it is looking like octagon
hope it helps you
please mark me as brainlist
guys do you know any websites that rewrites you text so you don’t get plagiarism?
I charge my stylus 2-3 hours a day. But after all the charging the battery only lasts for 5 minutes. I hope someone can rectify this issue for me. Thank you..
Answer:
Well if your charging it to 100% nd its only lasting 5 minutes it may be because you charger is getting old or is breaking. What model do you have (stylus)
Explanation:
Which of these best represents a call to action?
O A. Bright colors on a billboard
O B. "Buy 1 Get One Free!"
O C. Loud background music to a commercial
O D. "Come in today!"
Answer:
d
Explanation:
d just did it
"Come in today!" best represents a call to action. Thus, option D is correct.
What is a call to action?This is an instruction on a webpage or a house call that directs the customer to execute an action. Traditionally, a call to action is expressed as a directive and deed that a person needs to come in soon. Any layout intended to elicit an instant answer or promote an entrepreneurship culture is referred to in promotion as a "call to action."
The shop represents or says that come in today, they were for the customer to come in today and help the people to come in and get the product that is needed.
This suggests that the part there will be a change in the want of the people and the command of the people that the people should immediately want them to come in, it is a strategy to attract the customers. Therefore, option D is the correct option.
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The schematic diagram below shows three machines in a production unit connected to a 240 volt supply.
The layout uses different types of wire for the main wire, wire 1, wire 2, and wire 3.
Calculate the maximum current that can flow through each type of wire. The diameter of a wire is related to the maximum amount of current it
can safely carry. Use Internet resources to find the most suitable gauge of wire for each part of the wiring in the circuit. List the highest American
Wire Gauge (AWG) number that you can use for each type of wire. (Hint: For the main wire, consider how the current through it relates to the
currents through each of the machines.)
Also, state how you can protect the wiring from damage If any of the machines exceeds its maximum power rating because of a malfunction.
Answer:
[tex]\begin{array}{ccc}Wire \ Number &Maximum\ \ Current \ (A)& AWG\\&&\\Main \ Wire&16\frac{5}{6} &9\\&&\\Wire \ 1&9\frac{1}{6} &12\\&&\\Wire \ 2&5&14\\&&\\Wire \ 3&2.5&17\end{array}[/tex]
Explanation:
The given parameters of the circuit are;
The voltage applied to the circuit = 240 volt
The types of wire in the circuit are Main wire, wire 1, wire 2, and wire 3
The maximum current that can flow through each type of wire is given by the max power of the machine powered by the wire
Power, P = Voltage, V × Current, I
∴ I = P/V
The maximum power of the machine powered by wire 1 = 2,200 W
The current flowing through wire 1, I₁ = 2,200 W/(240 V) = 55/6 A = [tex]9\dfrac{1}{6} \, A[/tex]
The maximum power of the machine powered by wire 2 = 1,200 W
The current flowing through wire 2, I₂ = 1,200 W/(240 V) = 5 A
The maximum power of the machine powered by wire 3 = 600 W
The current flowing through wire 3, I₃ = 600 W/(240 V) = 2.5 A
Therefore, Kirchhoff's current law, we have;
The current that the main wire can carry, I = I₁ + I₂ + I₃
∴ I = 55/6 A + 5 A + 2.5 A = 50/3 A = 16.[tex]\overline 6[/tex] A
The current that the main wire can carry, I = 16.[tex]\overline 6[/tex] A
The highest American Wire Gauge (AWG) that can be used for each type of wire are listed as follows;
[tex]\begin{array}{ccc}Wire \ Number &Maximum\ \ Current \ (A)& AWG\\&&\\I&16\frac{5}{6} &9\\&&\\I_1&9\frac{1}{6} &12\\&&\\I_2&5&14\\&&\\I_3&2.5&17\end{array}[/tex]
Therefore, we have;
[tex]\begin{array}{ccc}Wire \ Number &Maximum\ \ Current \ (A)& AWG\\&&\\Main \ Wire&16\frac{5}{6} &9\\&&\\Wire \ 1&9\frac{1}{6} &12\\&&\\Wire \ 2&5&14\\&&\\Wire \ 3&2.5&17\end{array}[/tex]
Jessica has two pens, one red pen and a black pen. The red pen measures 5 inches while the
black one measures 15.24 cenfimefers.
A) How long is Jessica's red pen in centimeters
B) How long is Jessica's black pen in inches
C) which pen is longer
2) John rode 2 kilometers on his bike. His sister Sally rode 3000 meters on her bike. Who rode the
fasthest and
A) How much did John ride in meters
B) How much did Sally ride in kilometers 2012
C) Who rode the farthesten
D) How much farther did they ride (in kilometers)?
E) How much farther did they ride (in meters)?
3) Faye drew two line segments. The first line segment measures 7 inches while the second measures
10 inches.
A) What is the length of the first line segment in centimeters
B) What is the length of the second line segment in centimeters?
branleast ka sakin pag sinagotan moto promise
pag hindi maayos yan report ka sakin
Answer:
1.
A) 12.7
B) 6
C) The black pen
2.
A) 2000
B) 3
C) Sally
D) They rode 1 kilometers farther
E) They rode 1000 meters farther
3.
A) 17.78
B) 25.4
Explanation:
A=5×2.54=12.7cmB.=15.24/2.54=6inchC.black pencilsalli rode a bike faster thanjohn.A.john ride bike in metre=2×1000=2000m
B.salli ride a bike in kilometre=3000/1000=3 km
C.salli rode a bike fastest.sorry i do not know d,e
3.A=7×2.54=17.78cmB.10×2.54=25.4cm
8.
Which of the following text pieces can be easily typed using right hand?
A. stewardess
B. lillipop
C. typewriter
D. FACE
Answer:
Lillipop
Explanation:
If you have your hands correctly placed on the keyboard, the only hand needed to type the word, "lillipop", is the left hand!
Hope I was of Assistance #SpreadTheLove <3
A client needed a software application to be delivered with a demo of the working software at every stage of development. The project head ensured that all the team members were in the same location. The work was completed in a short duration with minimal documentation and through continuous customer interaction. Which model did the team use? A agile B. spiral C waterfall D. RAD
Answer:
Rapid Application Development (RAD)
Explanation:
Software development life cycle (SDLC) can be defined as a strategic process or methodology that defines the key steps or stages for creating and implementing high quality software applications.
RAD is an acronym for rapid application development and it is a model that is typically based on the concepts of prototyping and iterative development technique with minimal documentation or planning involved.
In the RAD model, more priority is given to the development of the software while minimal attention is given to documentation or planning. Therefore, it focuses on developing softwares within a short period of time and using prototypes (working modules) such as templates, codes, processes, tools, etc.
Basically, the RAD model comprises of five (5) phases and these includes;
I. Business modeling.
II. Data modeling.
III. Process modeling.
IV. Application generation.
V. Testing and turnover.
In conclusion, the RAD model allows software application to be delivered with a demo of the working software at every stage of development for continuous customer interaction.
Answer:
Its rad ladies and gentlemen
Explanation:
Please answer these computer fill in the blanks
1) operators are the _______________ used in formulas to perform a particular calculation
2) the____________feature of Excelhelps to copy the formula quickly
3) Excel provides over ________________used to perform calculations
4) ____________ category of functions includes functions for calculation, and tracking principal and interest
5) ___________ functions returns one of two results you specify based on whether the value is TRUE or FALSE
Answer:
best
cool
Explanation:
Frida has been given the task of creating a database to store all her company's records and sales records. She is going to produce a relational database. The customers records will have the fields Customer_id, Name, Contact_Phone, and card Number. The sales records will have the fields Invoice_number, Item_number, Item_description, Item_cost and Customer_ref.
Complete the diagram below to show how the tables will be combined.
Answer:
A value that's used to identify a record from a linked table is called a ______. ... A database administrator is setting up a new table that will contain customer ... The fields include name, address, company, phone, email, and customer ID. ... Gina does not know how to write SQL commands and no forms have been created.
Explanation: