Define the following terms: data model, database schema, database state, internal schema, conceptual schema, external schema, data independence, DDL, DML, SDL, VDL, query language, host language, data sublanguage, database utility, catalog, client/server architecture, three-tier architecture, and n-tier architecture.
Answers
Answer:
Following are the solution to the given terms:
Explanation:
Data Model: A set of concepts that are ideal for describing the layout, computational tools, relations, semantics, constraints on accuracy.
Database Scheme: It is also known as the overall design of the database.
Database State: It is the data in the database at a particular moment in time.
Internal Schema: The physical structure of the database is defined.
Conceptual Schema: It hides the details of physical storage.
External Schema: It describes the part of the database the user group sees. In other words, we can say that it is a view of the database.
Data Independence: The ability to modify the schema at a single level while modifying the schema at a higher level is often recognized.
DDL: It stands for the Data Definition Language, which is used by DBA and dev use for creating With particular scheme.
DML: It refers to the Data Manipulation Language, which is used to manipulate, add, recover, insert, remove, and alter data.
SDL: It stands for the storage definition language, in which the internal schema of the database is applied for storage description.
VDL: The view definition language specifies the user to view and mapping their conceptual schema.
Query Language: It is just an independent, dynamic, high-level dialect used during manipulation.
Host Language: It is also the machine language, that would be incorporated into the general programming language by low-level data handling commands.
Data sublanguage: It uses for embedding in the last language.
Database Utility: It is a program, which helps to handle the database with DBA's modules.
Catalog: The entire structure and constraints of the database is defined.
client/server architecture: The design of the database server system that device usability: model user, model server (landless storage) software Government computer design in which many users (remote processors) demand a central server to receive service (host computer).
Three-tier architecture: It is the application, data, user interface.
n-tier architecture: multiple levels. The nth level must only be able to handle the n+1 application and transmit it to the n-1 point.
Related Questions
1) It is possible to email a document
directly from the Word application.
O FALSE
O TRUE
Answers
Answer:
True
Explanation:
What is the difference between packaged and tailored software
Answers
Answer:
Packaged software is a collection of programs that perform similar functions or have similar features to meet various goals and objectives. e.g Microsoft Office While tailored software is software specially developed for some specific organisation or other user. e.g Amazon, Netflix.
How does an online intrusion usually begin
Answers
Answer:
n the first stage of an intrusion, a nation-state attacker works to understand their target. That effort begins with scanning, researching important people and email addresses associated with the target, looking up open-source information regarding the organization or government and documenting everything they find on the network.
Explanation:
Answer:
it begins by gossips from peoples comments
Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
PH
var num2 = 32;
var num1 = 12;
var rem=num2 % numi;
while(rem > 0)
{
num2 = num1;
num1 = rem;
rem = num2 % num1;
}
document.write(num1);
The output of the document.write statement at the end of this block is
Answers
Answer:
4
Explanation:
Given
The attached code segment
Required
The output
The first and second lines initialize num2 to 32 and num1 to 12, respectively.
Next, the remainder is calculated on line 3
\(rem = 32\%12\)
\(rem = 8\)
Then the while loop is repeated as long as rem > 0.
At first, we have:
\(num2 = 32\)
\(num1 = 12\)
\(rem = 8\)
The first iteration gives:
\(num2 = 12\)
\(num1 = 8\)
\(rem = 12\%8 = 4\)
Is 4 > 0? Yes; The loop is executed again.
This gives:
\(num2 = 8\)
\(num1 = 4\)
\(rem = 8\%4=0\)
Is 0 > 0? No; The loop is executed
The last statement prints the last value of num1;
In the last loop, we have:
\(num1 = 4\)
Hence, the output is 4
Answer:
Below is correct, the answer is 4.
Explanation:
PLATO
Application of technical writing
Answers
Answer:
python
Explanation:
The applications of technical writing are implied in every field of education. Some of its applications are given below:
The writing of papers, such as laboratory reports and project reports, for other people who are specialists in that field of education. Making the analysis of the research-based topics in the field of work. Performing any survey according to ground reports on the paper in the presence of a large number of people. What is Technical writing?Technical writing may be defined as a way of articulating in an apparent and concise way on the basis of some concept, idea, or instructions.
Therefore, it is well described above.
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Is it possible to beat the final level of Halo Reach?
Answers
fill in the blank. a(n)___solution makes all of the computing hardware resources available, and the customers, in turn, are responsible for installing and managing the systems, which they can normally do, for the most part, over the internet.
Answers
The clients are in charge of installing and operating the systems after the cloud solution makes all of the computing hardware resources available, which they can typically accomplish, for the most part, online.
What is hardware
Hardware refers to physical components of a computer system. This includes the internal components such as the motherboard, CPU, memory, and storage, as well as any external peripherals such as a mouse, keyboard, monitor, printer, and scanner. All of these pieces of hardware interact with each other and with the operating system to form a complete computing system. Hardware can also refer to physical objects that are connected to the computer, such as a router, server, or network switch. Computer hardware is necessary for any type of computer system to properly, and it is usually the first step in setting up a computer system.
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5 ways in which academic library supports teaching learning and research
Answers
The academic library helps support teaching, learning, and research because it allows people to teach themselves and learn by doing their own research. When you go into an academic library, you are able to find the topic that you are struggling with and do your own research and learn more about it. By doing this you are teaching yourself more about the topic that you were struggling with. By allowing students to have an academic library they have more Independence to learn on their own, teach themselves, and do their own research rather than having to ask a teacher for the questions that they have or for the answer.
Create a python program that allows the user to continuously enter numbers until the user enters 0. Output the sum of the numbers
Answers
Answer:
m = 0
summ = 0
n=int(input('Enter a number, 0 to end: '))
while n != 0:
summ = summ + n
m = m + 1
n=int(input('Enter a number, 0 to end: '))
print('You entered',m,'numbers and the sum of the numbers you entered is', summ)
Explanation:
m is used to count the numbers entered, summ is used to store the summation of the numbers, n is used to store the number entered. When a number is entered, it is checked if the number is not equal to 0 using a while loop. If the condition is True, the loop body is executed, which adds the number entered to sum which has an initial value of 0, this is repeated until zero (0) is entered which terminates the loop and prints out the summation of the entered number.
How many passes will it take to find the four in the list 4,5,6,7,8,9,10
Answers
Answer:
1
Explanation:
Which of these ports listed is the fastest? IEEE 1394 USB2.0 FIREWIRE ESATA
Answers
The port which is the fastest is ESATA.
What is ESATA?eSATA can be described as the SATA connector which can be access from outside the computer and it help to give the necessary signal connection that is needed for external storage devices.
The eSATA serves as a version of the eSATA port which is been regarded as the External SATA port, therefore, The port which is the fastest is ESATA.
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Use the drop-down menus to identify the roles that can be granted to a delegate in Outlook.
The
role grants read, create, and modify permissions.
The read-only permission is granted by the
role.
The
v role will allow the user to create new items.
Answers
Answer:
editor
reviewer
author
Explanation:
on edg
Answer:
editor
reviewer
author
Explanation:
Brainy has a computer and wants to perform an upgrade. He has two sticks of RAM of his computer ( total 3 GB) and he noticed it gets very slow. He has also noticed that the sluggishness matches an increase in the hard drive activity. What is likely the cause of Brainy's problem? What can you recommend as a fix ?
Answers
Brainy's issue is most likely due to a shortage of RAM.
How can this be explained?The computer's limited 3 GB of RAM may pose a challenge in managing numerous operations, and consequently may heavily depend on virtual memory, causing heightened hard drive activity and a reduction in overall efficiency.
My suggestion to resolve this issue would be to enhance the RAM. By adding more RAM to the computer, its memory capacity will enhance, leading to a reduction in dependence on virtual memory and an enhancement in overall efficiency, as it will be able to stock and access a greater amount of data.
Enhancing the system's memory capacity by installing a RAM of 8 GB or more is likely to alleviate the issue of slow performance.
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In her role as an administrative professional, Martina is learning about different types
of business letters she might be asked to type. Which is MOST likely to be requested
by her manager?
acceptance letter
Dear John letter
happy birthday letter
chain letter
Answers
Answer: Acceptance letter
Explanation: I took the test :)
It is most likely that Martina's manager would request her to type an acceptance letter as it is a formal letter used to confirm that an individual or organization has accepted an invitation, a job offer, a proposal or any other request.
Acceptance letters are often required in business settings and can be used for a variety of purposes, such as accepting a job offer, accepting an invitation to a conference or event, or accepting a proposal for a business deal.
This type of letter is professional in nature and requires a specific tone and format, which would be important for Martina to learn as an administrative professional.
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1.Create a function that accepts any number of numerical (int and
float) variables as positional arguments and returns the sum ofthose variables.
2.Modify the above function to accept a keyword argument
'multiplier'. Modify the function to return an additional variable
that is the product of the sum and the multiplier.
3.Modify the above function to accept an additional keyword
argument 'divisor'. Modify the function to return an additional
variable that is the quotient of the sum and the divisor.
Answers
Answer:
This function accepts any number of numerical variables as positional arguments and returns their sum:
python
Copy code
def sum_numbers(*args):
return sum(args)
This function accepts a multiplier keyword argument and returns the product of the sum and the multiplier:
python
Copy code
def sum_numbers(*args, multiplier=1):
total_sum = sum(args)
return total_sum * multiplier
This function accepts an additional divisor keyword argument and returns the quotient of the sum and the divisor:
python
Copy code
def sum_numbers(*args, multiplier=1, divisor=1):
total_sum = sum(args)
return total_sum * multiplier, total_sum / divisor
You can call these functions with any number of numerical arguments and specify the multiplier and divisor keyword arguments as needed. Here are some examples:
python
# Example 1
print(sum_numbers(1, 2, 3)) # Output: 6
# Example 2
print(sum_numbers(1, 2, 3, multiplier=2)) # Output: 12
# Example 3
print(sum_numbers(1, 2, 3, multiplier=2, divisor=4)) # Output: (8, 3.0)
When a computer is suffering from a virus, you can use a compiler to help remove the virus. True or false?
Answers
It is true that when a computer is suffering from a virus, you can use a compiler to help remove the virus.
What is a compiler?Compilers are specialized software tools that convert the source code of one programming language into machine code, bytecode, or another programming language.
Usually, the source code is created in a high-level, readable language for humans, such Java or C++.
Programs that convert source code from a high-level programming language to a low-level programming language (such as assembly language, object code, or machine code) in order to produce an executable program are commonly referred to as "compilers."
The compiler, as we well know, transforms high-level source code into low-level code.
Low-level code is then executed on the target system. You can use a compiler to assist in virus removal when a computer is infected.
Thus, the given statement is true.
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With suitable example, illustrate the use of #ifdef and #ifndef.
Answers
Partitions are used to divide storage spaces into manageable segments.
Fixed partitions have a predetermined size, and they are used to allocate storage space based on the needs of an application. Fixed partitions are commonly used in mainframe systems, where applications require predictable amounts of storage.
For example, consider an organization that uses a mainframe system to manage its payroll. In this scenario, the organization may use fixed partitions to allocate storage space to the payroll application, ensuring that it has access to a specific amount of storage space at all times.
On the other hand, dynamic partitions allow the operating system to allocate storage space based on the requirements of an application. With dynamic partitions, the size of the partition is not fixed, and it can grow or shrink based on the needs of an application.
For example, consider a personal computer that is used to store and manage different types of data. In this scenario, dynamic partitions are used to allocate storage space to different applications based on their storage requirements.
As new applications are installed, the operating system dynamically allocates storage space to ensure that each application has sufficient storage space to function properly.
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10) If a citizen wants to learn more about a candidate's background, position on issues, and recent activities, what action will allow the citizen to access the MOST information? A) visiting the candidate's Internet website B) watching the candidate's television advertisment C) listening to what friends say about the candidate D) reading a newspaper article that mentions the candidate
Answers
Answer:
A.) Visiting a candidate's internet website
Explanation:
A.) is correct because this place is entirely dedicated to promoting the candidate. It is in this person's best interest to give as many beneficial facts about themselves here so that their reputation rises. However, because this site is managed by the candidate, it may omit some unflattering information about them.
B.) is incorrect because television advertisements do not have the time to share a lot about a candidate. In many cases, most of this time is spent bashing other candidates. In addition, the information in commercials is usually more sensationalized to quickly grab the audiences' attention.
C.) is incorrect because friends are not the direct source of the information. They received this knowledge from somewhere else that may not be reliable. They may also forget or accidentally change some of the information. Furthermore, they are most likely unaware of the candidate's entire background and political stances.
D.) is incorrect because a mention in the newspaper means that the candidate is only discussed a small amount. Newspapers only have a certain amount of space as well, so they usually do not devote a lot of space to one person.
A collection of programs which make computer work:--------
Answers
This collection of programs, named the operating system, is as important to the process of a computer system as its hardware.
What is a collection of programs known as?A collection of program that governs how your computer system runs and processes information is called Compiler. Computer network A group of. computing devices that are connected in. different ways in order to communicate and. share resources.The another term for computer programs is software system, software program, software package, software, Computer Software, packageWhat is the extensive collection of computer called?
A network is a collection of computers or others types of hardware, which is joined by communication channels that allow sharing of resources and information.
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in the lc-3, the sr1 decoder input comes from the sr1mux. what are the two inputs to the sr1mux? (hint: think about the store instructions)
Answers
In the lc-3, the sr1 decoder input comes from the sr1mux. what are the two inputs to the sr1mux is IR[8:6] and IR[11:9]
What functions does the LC 3 ALU support?A decoder is a device that transforms n lines of input into 2n lines of output and produces the original signal from the coded input signal. The fundamental decoding component can be an AND gate because it only generates a high output when all inputs are high.
Therefore, to examine each type, the operations are possible with the LC-3 ALU. Each operation is represented by a single opcode in the ISA: ADD, AND, and NOT.
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Which operating system does a driver assist with?
running applications
hardware management
file management
booting
Answers
Answer:
hardware management
Explanation:
Answer:
hardware management
Explanation:
Need help
I need help with this it’s really confusing and I have to send it to my teacher with a file I don’t get it
Answers
Answer:
100 POINTS MATHEMATICS MIDDLE SCHOOL HOMEWORK.
I will report you if you answer incorrectly or steal my points.
The figure below represents a network of physically linked devices, labeled A through F. A line between two devices indicates a connection. Devices can communicate only through the connections shown.
Which of the following statements are true about the ability for devices A and C to communicate?
Answers
The network is fault tolerant. If a single connection fails, any two devices can still communicate. Computers B and F need to first communicate with at least one other device in order to communicate with each other. The correct statements are I and II.
What is a network?Computer networking is the term for a network of connected computers that may communicate and share resources.
These networked devices transmit data through wireless or physical technologies using a set of guidelines known as communications protocols.
Local-area networks (LANs) and wide-area networks are two fundamental types of networks (WANs). LANs use links (wires, Ethernet cables, fibre optics, and Wi-Fi) that carry data quickly to link computers and peripheral devices in a constrained physical space, such as a corporate office, lab, or college campus.
The network can withstand errors. Any two connected devices can still communicate even if one connection breaks. In order to communicate with at least one other device, Computers B and F must first communicate with that device.
Thus, both the statements are correct.
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Your question seems incomplete, the complete question is:
The figure below represents a network of physically linked computers labeled A through F. A line between two computers indicates that the computers can communicate directly with each other. Any information sent between two computers that are not directly connected must go through at least one other computer. For example, information can be sent directly between computers A and B, but information sent between computers A and C must go through other computers.
Which of the following statements are true about this network:
I - The network is fault tolerant. If a single connection fails, any two devices can still communicate.
II - Computers B and F need to first communicate with at least one other device in order to communicate with each other.
cisco math using the networks created in the last chapter, identify the network address, first usable address, last usable address, broadcast address for each of the ip addresses.
Answers
All the broadcast address for each of the IP addresses is given below:
Network Address: 192.168.1.0
The network address is the first address in the network. It identifies the network, and all hosts on the network will have the same network portion of their address.
First Usable Address: 192.168.1.1
This is the first address that can be assigned to a device on the network. This address is always one higher than the network address.
Last Usable Address: 192.168.1.254
This is the last address that can be assigned to a device on the network. This address is always 254 lower than the broadcast address.
Broadcast Address: 192.168.1.255
This is the broadcast address for the network. It is used by devices on the network to send messages that are intended for all hosts on the network.
What is IP addresses?
An Internet Protocol (IP) address is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. An IP address serves two main functions: host or network interface identification and location addressing. IP addresses are written and displayed in human-readable notations, such as 172.16.254.1 in IPv4, and 2001:db8:0:1234:0:567:8:1 in IPv6.
The Internet Assigned Numbers Authority (IANA) manages the IP address space allocations globally and delegates five regional Internet registries (RIRs) to allocate IP address blocks to local Internet registries (ISPs) and other networks. IP addresses are divided into two parts: the network prefix and the host number.
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Question 18
Which of the following is true?
a = 1
b = 10
a
b<= a or a >= b
a>bor a == b
a band a == b
Answers
Answer:
None
Explanation:
Logical operators:
'and' indicates that the statement is true if both conditions are true.
'or' indicates that the statement is true if one or both conditions are true.
Given that a = 1 and b = 10:
The first statement is false (1×10 <= 1 is false, 1 >= 10 is also false)
The second statement is false (1>10 is false, a does not equal b)
The third statement is false (a does not equal b)
None of these statements are true.
Hope this helps :)
HURRY MY COMPUTER IS ABOUT TO DIE ILL GIVE BRAINLYESTn
Answers
Answer: D, C, E, are the answers! good luck.
Explanation:
Please help out with this question
Answers
Using a programme that highlights the changes between the two portions, such as a version control tool or a plagiarism checker, is one technique to compare different sections of a work.
What is the plagiarism detection tool?A plagiarism detector searches for similarities between your content and other texts using sophisticated database tools. Universities employ them to scan student assignments. Additionally, you can utilise paid plagiarism detectors to examine your own work before submission.
What do we call the computer programme that can identify plagiarism by examining the uniqueness of a piece of writing?Software that detects plagiarism compares uploaded materials to other content databases to determine whether they are plagiarised. Checkers for plagiarism are used by writers and content producers to prevent unintentional
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BRAINLIEST!!!!!!!!!!!!!!
Which of the following options in Backstage View should be selected if you want to open a new, blank document?
○ Share
○ Open
○ Export
○ New
Answers
Answer:
New
Explanation:
open just makes you open the last project you were working on, new makes a brand new one.
When you wish to start afresh with a blank document, select new choices in Backstage Views.
Backstage View:Opening simply opens the last project you were operating on, whereas new creates a whole new one.
This backstage view aids in the creation of new documents, as well as the saving, viewing, printing, and publishing of existing ones.
If you already have a document open, a window will pop up with data on the file, as shown below.
Therefore, the final answer is "New".
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A(n) ________ event is an alert that is generated when the gossip traffic enables a platform to conclude that an attack is under way
A. PEP
B. DDI
C. IDEP
D. IDME
Answers
Answer:
B. DDI
Explanation:
A(n) DDI event is an alert that is produce or invoke when the gossip traffic allow a platform to conclude that an attack or potential attack is under way.
A device driver is a computer program that operates or controls a particular type of device that is attached to a computer system.
A driver provides or supply a software interface to hardware devices which enable the operating systems and other computer programs to access hardware functions without needing to know the exact details in respect of the hardware being used.
DDI means Device Driver Interface
A driver relate or communicate with the device via the computer bus or communications subsystem to which the hardware is connected. Whenever a calling program invokes a routine in the driver, the driver will subsequently transmit commands to the device.
Which of the following is an example of critical reading?
Select all that apply:
Accepting textual claims at face value Considering an argument from a different point of view
Reviewing an argument to identify potential biases
Skimming a text to locate spelling errors or typos
Looking for ideas or concepts that confirm your beliefs
Answers
Answer:
Which of the following is an example of critical reading? Select all that apply:
a.Accepting textual claims at face valueb.Considering an argument from a different point of viewc. Reviewing an argument to identify potential biasesd. Skimming a text to locate spelling errors or typose. Looking for ideas or concepts that confirm your beliefs