The relational data model was developed in the b. 1970s.
What is a relational data model?A relational data model is a database model that enables the storage, maintenance, and querying of data in a structured manner. Data is stored in tables consisting of rows and columns in a relational data model. Each row in a table represents a single entity, and each column represents a specific characteristic or attribute of that entity.
Relational databases are the most widely used database management systems (DBMSs) since they provide a solid foundation for data management. They use Structured Query Language (SQL) to interact with data.
Relational data models are based on mathematical set theory and predicate logic. Relational data models use primary and foreign keys to establish relationships between tables. These relationships enable data retrieval and integration across different tables. The relational data model was first introduced in a paper by Edgar Codd in 1970.
Learn more about relational data model here:
brainly.com/question/13262352
#SPJ11
what specific windows defender policy setting will allow you to disable scanning and real-time protection for specific files or all files in specified folders?
Answer:here is the answer below
Explanation: The specific Windows Defender policy setting that allows you to disable scanning and real-time protection for specific files or all files in specified folders is called "Exclude files and folders from scanning" policy. This policy setting can be found in the Windows Defender Antivirus policy, which is located in the Group Policy Editor under Computer Configuration > Administrative Templates > Windows Components > Microsoft Defender Antivirus > Scan.
When you enable this policy and specify the files or folders to exclude, Windows Defender Antivirus will not scan those files or folders for threats and will not provide real-time protection for them. This can be useful in situations where you have files or folders that are known to be safe and you don't want them to be scanned unnecessarily, or if you have a particular application that requires exclusion from scanning to function properly.
Which type of IP address is used within a private network (LAN)? (5 points)
Network
Private
Public IP
VPN
Explanation:
A private IP address is used within a private network to connect securely to other devices within that same network
which one of the following wireless transmission types requires a clear los to function? a. bluetooth b. nfc c. wi-fi d. ir
The correct option is d. The wireless transmission type that requires a clear line of sight to function is Infrared (IR).
IR is a type of wireless transmission that uses electromagnetic radiation in the visible spectrum, which is only visible when the two devices are in direct line of sight. This means that obstacles such as walls, furniture, and other objects can block the signal.
In order to transmit data using IR, the two devices must be able to "see" each other. This is achieved by both devices having an IR transmitter and an IR receiver. The transmitter sends out an infrared light signal which is picked up by the receiver. When the receiver picks up the signal, the two devices are connected and can exchange data.
Bluetooth, NFC, and Wi-Fi are all types of wireless transmissions that do not require a clear line of sight to function. Bluetooth and NFC both use short-range radio waves to connect two devices. Wi-Fi uses radio waves to connect two or more devices to the same network. These types of wireless transmission do not require the two devices to be able to "see" each other, meaning they are not affected by obstacles such as walls, furniture, and other objects.
In conclusion, the wireless transmission type that requires a clear line of sight to function is Infrared (IR). Bluetooth, NFC, and Wi-Fi are all types of wireless transmissions that do not require a clear line of sight to function. So, the correct answer is option d. IR.
You can learn more about wireless transmission at: brainly.com/question/25881547
#SPJ11
T/F: Wolfram Alpha is an example of a search tool that can help you solve factual questions to help complete your homework.
The given statement "Wolfram Alpha is an example of a search tool that can help you solve factual questions to help complete your homework." is true because Wolfram Alpha is a search engine that can help with solving factual questions and completing homework assignments.
Wolfram Alpha differs from other search engines in that it focuses on computational knowledge rather than providing a list of web pages. Wolfram Alpha can provide answers to questions in various fields, including mathematics, science, engineering, finance, and many others. Students can use it to find solutions to mathematical equations, plot graphs, get definitions of technical terms, and much more.
You can learn more about Wolfram Alpha at
https://brainly.com/question/30401224
#SPJ11
All Java applications must have a method __________.A. public static Main(String[] args)B. public static Main(String args[])C. public static void main(String[] args)D. public void main(String[] args)E. public static main(String[] args)
All Java applications must have a method C: "public static void main(String[] args)".
This is the method where the execution of a Java program begins. It must be declared as public, static, void, and named "main" with a single parameter of type String array. The parameter "args" can be used to pass command-line arguments to the program if needed.
Options A, B, D, and E are not valid main method signatures and will result in a compilation error.
Therefore, the correct option is C.
You can learn more about Java Method at
https://brainly.com/question/29603082
#SPJ11
_________ is to implement one method in the structure chart at a time from the top to the bottom.A. Bottom-up approachB. Top-down approachC. Bottom-up and top-down approachD. Stepwise refinement
Top-down approach is to implement one method in the structure chart at a time from the top to the bottom. Thus, the correct option is B. Top-down approach.
Top-Down Approach is a programming methodology that breaks down a complicated system into manageable subcomponents or functional modules that have been designed to work together. It is a form of software design in which a framework is built that solves the primary issues, with the aim of breaking the software down into smaller pieces.
Therefore, the correct option is B. Top-down approach.
You can learn more about programming methodology at
https://brainly.com/question/15138259
#SPJ11
What is the resistance of a circuit with 20V and 2A?
The resistance of the circuit is 10 ohms.The resistance of a circuit can be calculated using Ohm's law, which states that resistance is equal to the ratio of voltage to current.
Therefore, if the circuit has a voltage of 20 volts and a current of 2 amperes, the resistance can be calculated as:
Resistance = Voltage / Current
Resistance = 20V / 2A
Resistance = 10 ohms
Therefore, the resistance of the circuit is 10 ohms. It is important to note that resistance is a measure of the opposition to the flow of electric current in a circuit and is typically measured in ohms (Ω). Knowing the resistance of a circuit is crucial in designing and analyzing electrical circuits, as well as in troubleshooting circuit problems.
Find out more about resistance
brainly.com/question/24076294
#SPJ4
what is the this keyword used to reference? the this keyword references the method that was called. the this keyword references the current class. the this keyword references the object that called the method. the this keyword references the instance variable that a local variable shadows.
Answer:
The "This Key"
Explanation:
This is how we reference it because it normally helps any confusion. (I might be wrong)
The "this" keyword in object-oriented programming refers to the current object or instance of a class. It is a reference to the object that the method was called on or the object that is currently being constructed. Therefore, the final answer is that the this keyword references the object that the method was called on.
When used within an instance method or constructor of a class, the this keyword is used to refer to the current object, i.e., the object on which the method or constructor is being invoked. This can be useful, for example, when there is a need to distinguish between an instance variable and a local variable that has the same name. Therefore, the correct answer to the question is: "The this keyword references the object that the method was called on."
Learn more about Programming: brainly.com/question/23275071
#SPJ11
which command would create a zip file containing the files holiday.tif and desc.txt and compress it as much as possible?
To create a zip file containing the files holiday.tif and desc.txt and compress it as much as possible, you can use the following command: zip -9 archive.zip holiday.tif desc.txt
Here, the command is "zip" and the options used with the command are "-9" and "-r". The "-9" option compresses the files as much as possible, and the "-r" option compresses the files recursively.
You can also use the following command to create a zip file containing the files holiday.tif and desc.txt and compress it as much as possible: zip -9 archive.zip holiday.tif desc.txtHere, the command is "zip" and the option used with the command is "-9", which compresses the files as much as possible.
The "archive.zip" is the name of the zip file that you want to create, and "holiday.tif" and "desc.txt" are the names of the files that you want to include in the zip file.
To know more about the Zip file: https://brainly.com/question/7148812
#SPJ11
indicate to which category the characteristic of the ip protocol belongs. you will only type the alphacharacter in the canvas textbox. category a. connectionless b. best-effort delivery c. media independent
The characteristic of the IP Protocol belongs to category A, Connectionless.
Connectionless means that each packet is transmitted independently and can take any path to reach the destination. This type of service is unreliable as there is no guarantee that all packets will reach the destination in the same order they were sent. Additionally, no handshaking is done between the source and destination which means that there is no end-to-end communication control.
IP Protocol is designed to provide a best-effort delivery, meaning that the network does not take responsibility for packet delivery. The responsibility lies with the sender to ensure the successful delivery of the packet, however, the network will try to send the packet. The packets may be reordered or dropped by the network and there is no guarantee that the packet will reach its destination.
IP Protocol is also media independent, meaning that it is capable of running on different physical layer technologies such as Ethernet, WiFi, or cellular. The IP layer handles any conversion needed to communicate between different physical media. This makes it possible to communicate over different media types.
Learn more about IP Protocol:https://brainly.com/question/17820678
#SPJ11
if the memory register for a particular computer is 32 bits wide, how much memory can this computer support?
If the memory register for a particular computer is 32 bits wide, then the maximum amount of memory that can be supported is 2^32 bits or 4 gigabytes (GB) of memory.
This is because a 32-bit register can represent 2^32 unique memory addresses, each of which can hold a single byte (8 bits) of data. So, the total amount of memory that can be addressed by a 32-bit register is 2^32 bytes, which is equivalent to 4 GB. Note that this assumes that the computer's architecture and operating system support a 32-bit memory address space.
The address conveyed to the memory unit is handled by the memory address register, and this may be done either by utilizing a bus technique (as we have done in our design) or by declaring the memory's direct input.
Learn more about memory register: https://brainly.com/question/12996770
#SPJ11
write code to print the location of any alphabetic character in the 2-character string passcode. each alphabetic character detected should print a sep
Here is the code to print the location of any alphabetic character in the 2-character string passcode. Each alphabetic character detected should print a sep. To print the location of any alphabetic character in the 2-character string passcode, you can use the following code:
for (int i = 0; i < passcode.length(); i++) {
if (Character.isAlphabetic(passcode.charAt(i))) {
System.out.println("Alphabetic character detected at position: " + i);
}
}
Let's discuss more below.
This code will loop through the 2-character string passcode and check each character if it is alphabetic or not. If an alphabetic character is detected, it will print its location.
Learn more about loop.
brainly.com/question/25955539
#SPJ11
If you add a slideshow to play as your desktop theme, you have customized your system softwarea. Trueb. False
The statement given "If you add a slideshow to play as your desktop theme, you have customized your system software" is true because by adding a slideshow to play as your desktop theme, you are customizing the system software, which is the operating system.
The desktop theme is a visual feature of the operating system, and customizing it is a way of personalizing the user experience. System software is responsible for managing the computer's resources, including hardware, software, and data. Examples of system software include operating systems, device drivers, and utility programs.
You can learn more about operating system at
https://brainly.com/question/22811693
#SPJ11
if the stack has room enough for 4 elements, can the program possibly handle an expression of 10 characters?
In this scenario, the stack has a maximum capacity of 4 elements, which means that it can only hold 4 values at any given time.
However, an expression with 10 characters would require more than 4 elements to be evaluated, which means that the stack would not be able to handle the expression.
In programming, a stack is a data structure that allows for the storage and retrieval of data in a specific order. A stack typically has a fixed size or maximum capacity, and it can only hold a certain number of elements at a time.
Learn more about programming:
https://brainly.com/question/26134656
#SPJ11
(int)('a' + Math.random() * ('z' - 'a' + 1)) returns a random number __________.A. between 0 and (int)'z'B. between (int)'a' and (int)'z'C. between 'a' and 'z'D. between 'a' and 'y'
Correct answer is option B. The expresion return a value between (int)'a' and (int)'z'.
Break down this expression furtherThe expresion returns a random integer number between the ASCII codes for the lowercase letters 'a' and 'z', which is (int)'a' and (int)'z' respectively. (int) will convert a number into an integer and Math.random() will generate a random number between 0 and 1. The expression is then multiplied by the difference between (int)'z' and (int)'a' + 1. The resulting expression will be a random number between (int)'a' and (int)'z'.Java code:import java.lang.Math;
public class Main {
public static void main(String[] args) {
int res = (int)('a' + Math.random() * ('z' - 'a' + 1));
System.out.println("Generated random num between: ");
System.out.println("(int)'a': " + (int)'a');
System.out.println("(int)'z': " + (int)'z');
System.out.println("Is: " + res);
}
}
For more information on Random integer in Java methods see: https://brainly.com/question/30079584
#SPJ11
15 POINTS
Which statement best describes what hardware is?
the electronic and mechanical parts of a computer device
the components that receive data from a computer
the electronic circuitry that executes instructions
the components that transform data into human-readable form
Answer:
A
Explanation:
The first statement "the electronic and mechanical parts of a computer device" best describes what hardware is.
Hardware refers to the physical components of a computer system, such as the motherboard, CPU, RAM, hard drive, and peripherals like the keyboard and mouse. These components are made up of electronic and mechanical parts that work together to receive, process, store, and output data.
leave a comment
write an if/else statement that compares age with 18, adds 1 to adults if age is greater than or equal to 18 , and adds 1 to minors otherwise.
Here is an example if/else statement in Python that compares age with 18, adds 1 to the variable "adults" if age is greater than or equal to 18, and adds 1 to the variable "minors" otherwise:
if age >= 18: adults += 1else: minors += 1In computer programming, an if/else statement is a control structure that allows the program to make a decision based on a condition. The condition is evaluated as either True or False and depending on the result, the program executes one of two code blocks: the if block or the else block.In this code snippet, the variable "age" represents the age of the person being checked, while the variables "adults" and "minors" represent the number of adults and minors, respectively. The "+=" operator is used to increment the value of these variables by 1.Learn more about the if/else statement:https://brainly.com/question/18736215
#SPJ11
if you define one or more constructors for a class, you must also explicitly define the , or it will be undefined for that class. a. visibility b. no-parameter constructor c. data type d. escape sequence
If you define one or more constructors for a class, you must also explicitly define the no-parameter constructor, or it will be undefined for that class. Therefore the correct option is option B.
It has no parameters and no implementation in it. The no-argument constructor is the default constructor that is created when a class is defined if no constructor is defined in the class.
No-argument constructors, also known as default constructors, are constructors that are called when an object is created with no arguments. They are mainly used to establish the initial values of instance variables. If you define one or more constructors for a class, you must also explicitly define the no-parameter constructor or it will be undefined for that class.
It's important to note that the no-parameter constructor is always available in the object-oriented programming language Java. Therefore the correct option is option B.
For such more question on constructors:
https://brainly.com/question/30399337
#SPJ11
which of the following are examples of output devices? (choose all that apply.) which of the following are examples of output devices? (choose all that apply.) monitor printer keyboard speakers cpu
The output device(s) among the options given in the question are Monitor, Printer, and Speakers.
An output device is a piece of hardware that receives data from a computer and converts it into a human-readable form. The data that has been processed is transmitted via an output device to a user. For instance, a printer receives data and transforms it into a hard copy that can be seen and touched. Similarly, a monitor receives data and turns it into a visual output. Speakers, on the other hand, convert digital sound data into audible sound. Here are the details of the output devices in the question.
Monitor PrinterSpeakersLearn more about device visit:
https://brainly.com/question/2612080
#SPJ11
what is the time complexity of ukkonen's method for suffix tree construction, in terms of the size of text (n), having a constant-size alphabet ?
Ukkonen's method for suffix tree construction has an average time complexity of O(n) and a worst-case time complexity of O(n log n), where n is the size of the text and the alphabet is a constant-size.
What is Ukkonen's algorithm?
Ukkonen's algorithm is a linear time algorithm for constructing suffix trees that are compressed. The algorithm is named after its creator, Esko Ukkonen, who presented it in his paper "On-line construction of suffix trees" in 1995.To construct the suffix tree of a string, Ukkonen's algorithm uses only O(n) time, making it linear. Suffix trees are a key data structure in string matching algorithms. When you use the suffix tree, you can get an O(m + log n) solution to the Longest Common Substring problem, where m is the length of the query string.Ukkonen's algorithm has a time complexity of O(n) since it is linear in terms of the size of the text (n) and has a constant-size alphabet. As a result, it's a useful method for creating suffix trees in situations where performance is essential.
Learn more about Algorithm here:
https://brainly.com/question/24953880
#SPJ11
all changes in a table structure are made using the table command, followed by a keyword that produces the specific changes a user wants to make. a. alter b. rollback c. update d. commit
All changes in a table structure are made using the `ALTER` command, followed by a keyword that produces the specific changes a user wants to make.
The `ALTER` command is a DDL (Data Definition Language) SQL command. This command is used to modify the structure of a table by renaming, deleting, or adding columns to an existing table. In a database, the `ALTER` command is frequently used to modify the structure of a table, rename a table, or add/remove columns to/from a table. It is often utilized with the CREATE TABLE or DROP TABLE commands. ALTER command is typically used to perform the following operations on a table in a database: Add or drop columns from an existing table. Rename the table. Rename a column. Change the data type of a column. Modify or remove constraints in a table. Change column order in a table. Change table storage options. Using ALTER TABLE statement, it is possible to modify a table's definition or structure without removing and recreating it. `ALTER` is used to change existing columns, add new ones, or remove existing ones.
To learn more about ALTER Command :
https://brainly.com/question/30391230
#SPJ11
which of the following best defines inconsistent retrievals? a. a concurrency control problem that arises when a transaction is occurring while other transactions are updating the same retrieved data. b. a concurrency control problem that arises when two transactions are occurring on the same retrieved data, resulting in inconsistent database requests. c. a concurrency control problem that arises when a transaction calculating summary functions over a set of data while other transactions are updating the same retrieved data. d. a concurrency control problem that arises when a database request is occurring while the same transaction is updating the retrieved data.
Inconsistent retrievals can be best defined as C. a concurrency control problem that arises when a transaction calculating summary functions over a set of data while other transactions are updating the same retrieved data.
Concurrency control is a crucial aspect of database management systems, as it ensures the consistency, isolation, and integrity of data when multiple transactions are executed simultaneously. Inconsistent retrievals occur when one transaction is trying to perform calculations or summary functions (such as aggregation) on a specific set of data, while other transactions are simultaneously updating the same data. This may lead to incorrect or inconsistent results, as the data being accessed by the first transaction may have been modified by the second transaction.
To avoid inconsistent retrievals, various concurrency control techniques can be employed. These techniques help manage simultaneous transactions by enforcing specific rules and protocols that maintain data consistency and prevent conflicts. Some popular concurrency control methods include locking, timestamp ordering, and optimistic concurrency control. By implementing these methods, database systems can effectively handle multiple transactions while maintaining the accuracy and consistency of the retrieved data. Therefore, the correct option is C.
Know more about Inconsistent retrievals here:
https://brainly.com/question/14209825
#SPJ11
4. Which format of data is easiest for analysis?
a. Tabular data
b. Text data in a PDF
c. Data in an image
d. Speech data
Answer:
A. Tabular data
Explanation:
Tabular data is the easiest format of data for analysis. Tabular data is organized into columns and rows
You want to scan a variety of family history documents and photos, many of which are very large. There are also some family history books that you need to scan.
Which of the follow scanners will MOST likely meet your scanning needs?
Flatbed scanner
The type of scanner that is most likely to meet the scanning needs of someone who wants to scan a variety of family history documents and photos, many of which are very large is a Flatbed scanner.
A flatbed scanner is a kind of scanner that uses a flat glass plate and a movable scanning head to make high-resolution digital scans of photos, documents, and other flat objects.
A flatbed scanner can scan photos, documents, books, and other flat objects with a high level of detail and resolution. It has a larger scanning area than other scanners, allowing you to scan larger documents and books.
It also has high color accuracy, allowing you to produce high-quality reproductions of your family history documents and photos. Thus, a Flatbed scanner is an ideal scanner for scanning family history books and photos.
drum scanner,
flatbed, and
handheld scanners.
Among these scanners flatbed scanner is most likely meet the scanning needs.
To know more about Flatbed scanner:https://brainly.com/question/983715
#SPJ11
if you want to create a click-to-call feature in your mobile site for smartphone users, which protocol should you use to create a phone link
The protocol you should use to create a click-to-call feature for smartphone users on a mobile site is called tel.
The tel protocol is used to create a link on a web page that will trigger a phone call when tapped or clicked on by a user. When a user clicks on the tel: link, their phone will prompt them to dial a specific phone number. To create a tel: link, you need to include the phone number in the link, like this: 555-123-4567. This link will create a click-to-call feature that will initiate a phone call to the number when clicked. By using the tel: protocol, you can make it easy for mobile users to contact you with a simple tap of the screen.
You can learn more about protocol at: brainly.com/question/27581708
#SPJ11
Write a while loop that multiplies userValue by 2 while all of the following conditions are true: userValue is not 10 userValue is less than 25 Your Solution function userValue = AdjustValue(userValue) % Write a while loop that multiplies userValue by 2 % while userValue is not 10 and while userValue is less than 25 userValue = 0; end Run Your Solution Code to call your function when you click Run AdjustValue(2)
When the function is called with the argument AdjustValue(2), it will first initialize userValue as 2. The while loop will then execute as long as the condition userValue ~= 10 && userValue < 25 is true.
Following is the required solution: function userValue = AdjustValue(userValue)
% Write a while loop that multiplies userValue by 2
% while userValue is not 10 and while userValue is less than 25
while userValue ~= 10 && userValue < 25
userValue = userValue*2; end end
When the function is called with the argument AdjustValue(2), it will first initialize userValue as 2. The while loop will then execute as long as the condition userValue ~= 10 && userValue < 25 is true.
Inside the loop, userValue is multiplied by 2. This process will continue until user value becomes greater than or equal to 25 or equal to 10. If userValue becomes 10 or greater than 25, the loop will terminate and the value of userValue will be returned.
To know more about while loop:https://brainly.com/question/19344465
#SPJ11
what new feature in server 2016 provides a light-weight server geared toward use on virtual machines?
The new feature in Server 2016 that provides a light-weight server geared toward use on virtual machines is called "Nano Server".
Nano Server is a minimalistic version of Windows Server 2016 that is designed specifically for running cloud-based applications and optimized for use in virtualized and containerized environments. It is a lightweight and low-maintenance option that can be used to run Hyper-V clusters, scale-out file servers, and other cloud-based workloads.
Nano Server has a smaller footprint than other versions of Windows Server 2016, with no GUI or local logon capability. This makes it more secure and easier to manage remotely. Nano Server is also designed to be updated and managed using remote management tools like PowerShell, Windows Management Instrumentation (WMI), and Desired State Configuration (DSC).
Learn more about Nano Server
https://brainly.com/question/28282755
#SPJ11
Which of the following attacks targets the external software component that is a repository of both code and data?
Application program interface (API) attack
Device driver manipulation attack
Dynamic-link library (DLL) injection attack
OS REG attack
The attack that targets the external software component that is a repository of both code and data is the C: Dynamic-link library (DLL) injection attack.
A Dynamic-link library (DLL) injection attack is a type of cyber attack that targets external software components known as DLLs, which are repositories of code and data that are shared among different programs. The attack involves injecting malicious code into the DLLs, which can then be executed whenever the DLL is loaded into memory. This type of attack can be used to take control of a system or steal sensitive information.
DLL injection attacks are particularly effective because they can bypass traditional security measures, such as firewalls and antivirus software. To prevent these attacks, it is essential to implement security measures that detect and block unauthorized DLL injections.
You can learn more about Dynamic-link library (DLL) injection attack at
https://brainly.com/question/15223070
#SPJ11
key performance indicators (kpis) are a more defined target for your team to track progress towards objectives. if your objective is to increase link clicks by 20% on linkedin, what should be the corresponding kpi?
The "Click-through Rate" (CTR) for the LinkedIn articles might be the equivalent KPI for the goal to increase link clicks by 20% on LinkedIn.
What KPI measurements are used to LinkedIn?A LinkedIn KPI or metric is a measurement tool used in company pages and individual profiles to track and measure their effect through particular goals, be it engagement, reaching out, or creating relationships with as many people as they can in their particular field.
The KPI click-through rate is what.The key performance indicator (KPI) known as click-through rate (or CTR for short) is used in search engine optimization and other marketing channels like email to calculate the proportion of clicks to impressions or views of a link.
To know more about LinkedIn visit:-
https://brainly.com/question/14331694
#SPJ1
abigail needs to move out of state to take care of her mother. she will need secure remote access to continue working as a cloud engineer. what type of connection does abigail need to securely access the computing resources at her company?
Abigail will need a Virtual Private Network (VPN) connection to securely access the computing resources at her company.
A VPN connection allows remote users to securely access a private network over the public internet. With a VPN connection, Abigail can connect to her company's network from her remote location as if she were physically present in the office.
The VPN connection creates a secure and encrypted tunnel between Abigail's computer and the company's network, protecting her communications and data from unauthorized access. This ensures that Abigail can securely access the company's computing resources, such as servers, applications, and databases, without exposing them to potential security risks on the public internet.
Overall, a VPN connection is a secure and reliable way for remote workers to access corporate resources from a remote location.
Learn more about VPN here brainly.com/question/29432190
#SPJ4