In order for two queries to be UNION-compatible, they must: Select one: A. both have the same number of lines in their SQL statements. B. both output compatible data types for each column and return the same number of rows. C. both return at least one row. D. both return exactly one row.

Answers

Answer 1

Answer: B. both output compatible data types for each column and return the same number of rows.

Explanation:

In order for two queries to be UNION-compatible, they must be both output compatible data types for each column and return the same number of rows.

It should be noted that two relations are union compatible when both relations have the same attributes and also the domain regarding the identical attributes are thesame.


Related Questions

Which of these functions may be used with positional arguments? Select four options.

AVERAGE
COUNTIF
COUNT
SUM
MAX

Answers

Answer:

AVERAGE

COUNT

SUM

MAX

Explanation:

The functions that may be used with positional arguments include:

AVERAGE

COUNT

SUM

MAX

The basic functions formulae include SUM, AVERAGE, COUNT, MAX and MIN.

SUM: This is the sum total of all the numbers in the rows.

COUNT: This is the used to count the range of cells that contains numbers.

AVERAGE: This is the average of all the numbers in the rows.

MIN: This is the lowest number in the rows.

MAX: This will return the highest number that is found in the set of values.

It should be noted that the COUNTIF is not used with positional arguments.

What stage in the process of media production involves discussing the budget and timelines as well as identifying stakeholders? create/develop upload/display research/define plan/design

Answers

Answer:

research/define

It is C

Define Data communication​

Answers

Explanation:

Data transmission and data reception is the transfer and reception of data over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires, optical fibers, wireless communication channels, storage media and computer buses. 

are the exchange of data between two devices For data communications to occur, the communicating devices must be part of a communication system made up of a combination of hardware

(a) Rewrite the following using if else statement:
int x;
String s=(x%3=0)? “Divisible by 3" : "Not divisible by 3";
System.out.println(s);​

Answers

Answer:

int x;

String s;

if ((x%3) == 0) {

   s = "Divisible by 3";

} else {

  s = "Not divisible by 3";

}

System.out.println(s);​

Explanation:

A : B ? C generally translates to if (A) { B } else { C }.

Note the == to compare to 0. The single = in the original expression is a mistake.

discuss any five barries of integrating ict tools in education​

Answers

Answer:

lack of computer, lack of quality software, lack of time, lack of technical programs and lack of teachers

You are concerned about attacks directed at your network firewall. You want to be able to identify and be notified of any attacks. In addition, you want the system to take immediate action to stop or prevent the attack, if possible. Which tool should you use

Answers

Answer:

Intrusion Prevention System (IPS)

Explanation:

Firewall can be defined as a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules.

Simply stated, a firewall is a network security protocol that monitors and controls inbound and outbound traffic based on set aside security rules.

A firewall is used to control access to a computer or network, as it creates a barrier between a computer or a network and the internet in order to protect against unauthorized access.

Basically, it is a network security device or security system pre-installed on most computers to essentially inspect data being transmitted to or from a computer

Thus, the tool you should use is an intrusion prevention system (IPS).

When media is used to communicate with a very large audience, it is referred to as media.

Answers

Answer:

mass media

Explanation:

Answer:Mass media communication

Explanation:

A program in the cyberspace and intercept messages containing specific text A. Virus B. Sniffers C. Worm D. Bomb

Answers

Answer:

B. Sniffer

Explanation:

The type of program that is being discussed is called a Sniffer. This can either be a software or hardware that allows the user to intercept data flowing from a computer to the internet in real-time before it reaches its destination. The program can be very vague and intercept all the data coming and going to the target computer or it can be very specific and intercept only the data in which it was programmed to target (sniff out). Cyber Criminals use these programs/devices to steal valuable information that they know a user is going to send sooner or later over the internet.

Nama prinsip kerja mouse adalah

Answers

Answer:

Mampu bekerja di hampir semua permukaan, mouse memiliki light-emitting diode (LED) merah kecil yang memantulkan cahaya dari permukaan itu ke sensor semikonduktor oksida logam (CMOS) komplementer. Sensor CMOS mengirimkan setiap gambar ke prosesor sinyal digital (DSP) untuk dianalisis.

in english

Able to work on almost any surface, the mouse has a small, red light-emitting diode (LED) that bounces light off that surface onto a complementary metal-oxide semiconductor (CMOS) sensor. The CMOS sensor sends each image to a digital signal processor (DSP) for analysis.

hardware and software are........... to each other​

Answers

Answer:

Hardware and software are interconnected to each other​

Hope this is what you´re looking for!

Write an algorithm and draw a flowchart for switching off a machine after it has made 500 glass bottles. use an appropriate conditional statement for this
please hurry i need urgent
please answer correct
or i will report

Answers

The algorithm is as follows:

1. Start

2. bottles = 0

3. While bottles != 500

3.1 Create bottle

3.2 bottle = bottle + 1

4. Switch off machine

5. Stop

Explanation:

This begins the algorithm

1. Start

This initializes bottles to 0

2. bottles = 0

The loop is repeated until 500 bottles is created

3. While bottles != 500

This creates a new bottle

3.1 Create bottle

This increments the number of bottles by 1

3.2 bottle = bottle + 1

This switches of the machine after all bottles are created

4. Switch off machine

End algorithm

5. Stop

THANKS

After completing initial diagnostic procedures and allocating system resources, a startup BIOS program checks for information about secondary storage devices that might contain the OS. The list of devices and the order in which they should be checked can be found and arranged in the CMOS setup utility. This option is commonly referred to as a:

Answers

Answer:

Boor sequence

Explanation:

A computer is an.............. device.​

Answers

Explanation:

A computer is an electronic device

Answer:

Computers are electronic devices that process information.

Can someone answer this, I'll mark u the brialintest

Answers

Answer:

d

Explanation:

Decimal equivalent of "D" = (D) 13 × 16^1

What is ABC computer?​

Answers

Answer: The Atanasoff–Berry computer was the first automatic electronic digital computer. Limited by the technology of the day, and execution, the device has remained somewhat obscure. The ABC's priority is debated among historians of computer technology, because it was neither programmable, nor Turing-complete.

Explanation:

A security operations team was alerted to abnormal DNS activity coming from a user's machine. The team performed a forensic investigation and discovered a host had been compromised. Malicious code was using DNS as a tunnel to extract data from the client machine, which had been leaked and transferred to an unsecure public Internet site. Which of the following BEST describes the attack?
A. Phishing
B. Pharming
C. Cache poisoning
D. Data exfiltration

Answers

Answer:

D. Data exfiltration

Explanation:

Data theft can be defined as a cyber attack which typically involves an unauthorized access to a user's data with the sole intention to use for fraudulent purposes or illegal operations. There are several methods used by cyber criminals or hackers to obtain user data and these includes DDOS attack, SQL injection, man in the middle, phishing, sniffing, data exfiltration, etc.

The type of attack in this scenario is best described as data exfiltration.

Data exfiltration can be defined as a form of data security breach that typically involves an unauthorized transfer of data from a host computer by using a malware and a malicious code.

Hence, data exfiltration occurs when a malicious code uses a domain name server (DNS) as a tunnel to extract data from an end user's computer (client machine) and transferring it to an unsecure public Internet site.

Section A: A(n) is a collection of information, generally stored as computer files. The information it contains can be stored, updated, organized, output, distributed, searched, and analyzed. A filing cabinet full of folders and papers would be classified as a(n) file. A(n) file use

Answers

Answer:

A database is a collection of information, generally stored as computer files. The information it contains can be stored, updated,  organized, output, distributed, searched, and analyzed. A filing cabinet full of folders and papers would be classified as an unstructured file. A structured file uses a uniform format to store data for each person or thin in the file

Explanation:

A database is a systematically structured collection of data or information that is usually digitally and electronically stored within an computer

Unstructured files are large number of files that are not stored based on structural properties, or kept in an organized format

Structured file are files that are keeps data in a uniform organized structural format

Selena owns a bakery. She wants to compare the number of pies, cookies, cakes, and brownies that she sells in one month. Which charts are appropriate for this task? Check all that apply.

Answers

Column, line, bar, and possibly pie.

Answer:

Column, Bar, And Pie

Explanation:

got it right

(11011+1001) base 2
please slove this​

Answers

Answer:

Explanation:

We can convert both to base 10 first:

(1+2+8+16) + (1+8) = 36.

Converting back to base 2, we get

100100

What is the primary difference, if any, between a web master and a web producer? While a web master maintains a company’s websites, the web producer maintains a company’s entire web-based system. While a web producer maintains a company’s websites, the web master maintains a company’s entire web-based system. While a web master maintains a company’s web presence, the web producer maintains all technology at a company. While a web producer maintains a company’s web presence, the web master maintains all technology at a company.

Answers

Answer:

While a web master maintains a company’s websites, the web producer maintains a company’s entire web-based system.

I'm assuming that's A

what is internet?
what is online?​

Answers

Answer:

internet: The Internet is a vast network that connects computers all over the world. Through the Internet, people can share information and communicate from anywhere with an Internet connection.

online: controlled by or connected to a computer., while connected to a computer or under computer control.

How is IT used in entertainment to make cartoon movies

Answers

Answer:

Forensic animation is a branch of forensics in which animated recreation of incidents are created to aid investigators & help solve cases. Examples include the use of computer animation, stills, and other audio visual aids.

hope you will get this answer correct

NBA bank uses centralized client server database that is accessed by all its nationwide branches. All customers' records are stored on the database. There are no copies at the branches. The building that holds this database and all the equipment went up in flames and was destroyed.

Answers

Answer:

NBA bank data is completely destroyed since it has not maintained any backup.

Explanation:

All businesses should maintain backup of important records. NBA bank has centralized client server database. This database record should be backup at different system which is only accessed when there is some problem in the original data. The backup system is initiated when the original database is destroyed.

Using a combination of symmetric and asymmetric key encryption, Sofia sent a report to her home office in Indiana. She received an e-mail acknowledgement that her report had been received, but a few minutes later she received a second e-mail that contained a different hash total than the one associated with her report. This most likely explanation for this result is that

Answers

Group of answer choices.

A) the public key had been compromised.

B) the private key had been compromised.

C) the symmetric encryption key had been compromised.

D) the asymmetric encryption key had been compromised.

Answer:

C) the symmetric encryption key had been compromised.

Explanation:

Cyber security can be defined as preventive practice of protecting computers, software programs, electronic devices, networks, servers and data from potential theft, attack, damage, or unauthorized access by using a body of technology, frameworks, processes and network engineers.

In Cyber security, encryption is a form of cryptography and typically involves the process of converting or encoding informations in plaintext into a code, known as a ciphertext.

Typically, an information or data that has been encrypted can only be accessed and deciphered by an authorized user.

Some examples of encryption algorithms are 3DES, AES, RC4, RC5, and RSA.

Email encryption is the encryption and authentication of an email to protect the message therein from being read by any person other than the intended recipients. Thus, it protects the email from hacking or invasion by a third party.

Basically, when the message is signed with the sender's private key, the receiver can verify its authenticity using the sender's public key.

Also, encrypting the email message with the receiver's public key provides confidentiality.

In this scenario, the most likely explanation for this result is that the symmetric encryption key had been compromised.

OUTPUT DEVICES 1. Match each output device on the left with the correct use on the right. Output device Use Multimedia A large monitor used by older computers Projector Used when checking the depth of water in a container Buzzer Used for outputting large posters, maps and plans Light A thin light weight monitor Wide format printer Used to make presentations to a large audience Dot matrix printer Used for producing mutli-part invoices CRT monitor Used as an alert on smartphones TFT/LCD monitor​

Answers

Answer:

hand

Explanation:

My name is Yoshikage Kira. I'm 33 years old. My house is in the northeast section of Morioh, where all the villas are, and I am not married. I work as an employee for the Kame Yu department stores, and I get home every day by 8 PM at the latest. I don't smoke, but I occasionally drink. I'm in bed by 11 PM, and make sure I get eight hours of sleep, no matter what. After having a glass of warm milk and doing about twenty minutes of stretches before going to bed, I usually have no problems sleeping until morning. Just like a baby, I wake up without any fatigue or stress in the morning. I was told there were no issues at my last check-up. I'm trying to explain that I'm a person who wishes to live a very quiet life. I take care not to trouble myself with any enemies, like winning and losing, that would cause me to lose sleep at night. That is how I deal with society, and I know that is what brings me happiness. Although, if I were to fight I wouldn't lose to anyone.

Which formatting group would commonly be used for monetary figures?

number
general
accounting
currency

Answers

Answer:

currency.

Explanation:

A word processor can be defined as a software application or program designed to avail the end users the ability to type and format text documents for various purposes.

Some examples of word processors are Notepad, Microsoft Word, etc.

Microsoft Word refers to a word processing software application or program developed by Microsoft Inc. to enable its users type, format and save text-based documents.

Formatting in Microsoft Word refers to the appearance of texts in a document.

Basically, to format a text typically involves performing tasks such as, bold, underline, italics, font-size, font-types, color, etc.

The commands to perform the above tasks are mainly found in the format menu of the Home tab.

In Microsoft Word, you can set the display format for date, percentage, number, and currency (monetary figures). Thus, this format styles define how these values are displayed in charts and tables.

In this context, the formatting group which is commonly used for monetary figures (numerical data) such as dollar, euro, yen, naira, etc., is called currency.

Answer:

I think the answer is D

Have a good day!

You are the Administrator for a large company that has offices around the world. Each office has employees in the Sales department and each location has created their own Sales folder for storing important Sales related files. You would like to implement a Window Role to minimize the duplication of files within the Sales department. Which File System can you install as a Windows Role to help you accomplish this goal?

Answers

Answer:

Transactional File System

Explanation:

To minimize the duplication of files within the Sales department. Transactional File System can make multiple file system changing, and if there is an error on one of the files then there will be no change.

Angelina has added page numbers to her report, but all of the pages are labeled "Page 1” at the bottom. What caused this issue?
She typed “Page 1” in the footer.
She added a header instead of a footer.
She did not create a numbered list in her footer.
She forgot to click the Continue Numbering option.

Answers

Answer:

She typed "Page 1" in the footer.

Explanation:

This occured because the footer only repeats the same message across the footers unless you enable page numbering.

Hope this helps!

What If smart phones / computers didn't exist?

Answers

Answer:

If the smart phones/ computers do not exist we wouldn't be able to communicate with the peoples or with our family members in the case when we are far from them. It has given us acess to : entertainment, family bonding social surrogacy e.t.c. Social interactions would be enhanced, and all the social dramas would not exist as much as it does now. Thus, it has a significant role in our life.

In what way, if any, has community building changed in the age of digital media? People’s community building has not changed in the age of digital media. People are now more willing to share highly personal information with strangers. People are now far less interested in building community or connecting with others. People are now more interested in forming communities based on physical location.

Answers

Answer:

People are now more willing to share highly personal information with strangers. Match each type of digital health, wellness, and security with examples of potential violations.

Other Questions
What is the area? please help Suppose 60% of the graduating class in a certain high school goes on to college. If 126 students from this graduation class are going on to college, how many students are from this graduating class? To collect data on the signal strengths in a neighborhood, Briana must drive from house to house and take readings. She has a graduate student, Henry, to assist her. Briana figures it would take her 12 hours to complete the task working alone, and that it would take Henry 18 hours if he completed the task by himself. How long will it take Briana and Henry to complete the task together? a. 6.7 hours b. 7.2 hours c. 5.6 hours which choice is equivalent to the expression below?67 - 5x7 - x7 What does Patrick live in?A:RockB:PineappleC:AnchorD:A Moai A man purchased a magazine at the airport for $2.69. The tax on the purchase was $0.13. What is the tax rate at the airport? The tax rate is %. (Round to the nearest percent as needed.) D. Rom has just given an insurance company $35,000. In return, he will receive an annuity of $3,700 for 20 years. At whatrate of return must the insurance company invest this $35,000 in order to make the annual payments? put this in order please n thanks About a Month And A Half I Got A 10x & 25x Aquarium I Had 9 Fish And Betta Pebbles And In Less Than a Week 1 to 2 Fish Die A Day And I Believe Its The Betta Rocks Because The Rock Package Says Medicine For Bettas But Lethal To Fish, Bc There's Medicine In The Rocks That Affect The Water And It Helps Betta Fish But Lethal To Other Fishes.I Have 2 Turtles And Almost a Month There Living In Betta Rocks And There OK. Find the accumulated value of an investment of $10,000 for 7 years at an interest rate of 5.5% if the money is a. Compounded semiannually;b. Compounded quarterly; c. Compounded monthly; d. Compounded continuously What is the emotion that comes through a non-fiction work called?A. RhetoricB. Evidencec. PurposeD. Tone The ratio of Seema's age to the age of her mother is 5:12. The age difference is 21 years. What will be the ratio of Seema's age and her mother's age after three years? Flapjack Corporation had 7,736 actual direct labor hours at an actual rate of $12.10 per hour. Original production had been budgeted for 1,100 units, but only 961 units were actually produced. Labor standards were 7.8 hours per completed unit at a standard rate of $13.21 per hour. The direct labor rate variance is:______. PLEASE HELP DUE TODAY Can you guys help me? The question is in the image please help, it is similar to angles. halpp Which best describes the relationship between the line that passes through the points (6, -1) and (11, 2) and the line that passes through thepoints (5-7) and (8-2)? , , , , , , , , , , , , Charlie's brother, Alexander, also consumes apples (A) and bananas (B). Alexander's utility function happens to be U(A, B) = 5A + 2B.(a) Alexander has 40 apples and 5 bananas. The indifference curve through (40, 5) also include bundle ( _____ , 2).(b) Alexander has 40 apples and 5 bananas. With this bundle, Alexander would like to give up _____ apple(s) for a banana. On December 31, Ott Co. had investments in equity securities as follows: Cost Fair value Lower of cost or fair value Mann Co. $10,000 $8,000 $8,000 Kemo, Inc. $9,000 $11,000 $9,000 Fenn Corp. $11,000 $9,000 $9,000 $30,000 $28,000 $26,000The Mann investment is classified as held-to-maturity, while the remaining securities are classified as available-for-sale. Ott does not elect the fair value option for reporting financial assets. Ott's December 31, Year 1, balance sheet should report total marketable debt securities as:_____.a. $29,000. b. $26,000. c. $30,000. d. $28,000.