Program-data independence which is the ability to change data structures and storage organization without having to change the DBMS access programs, is achieved through the use of .......................................... multiple user views data models internal schema external schema
Answers
Program-data independence, the ability to modify data structures and storage organization without affecting DBMS access programs, is achieved through the use of multiple user views.
How to achieve program-data independence?Program-data independence refers to the ability to modify the data structures and storage organization of a database without requiring changes to the programs that access the database. This is an important aspect of database management systems (DBMS) as it allows for flexibility and adaptability in managing data.
One way to achieve program-data independence is through the use of multiple user views. User views provide a logical representation of the data, allowing users to interact with the database using customized perspectives. These views act as a layer of abstraction between the physical data stored in the database and the applications that access it.
By defining user views, changes to the internal structure of the database can be made without affecting the external applications. The internal schema, which describes the physical storage details of the database, can be modified independently from the external schema, which represents the logical view of the data seen by the applications.
This separation allows for greater flexibility in adapting the database to evolving requirements without disrupting the functionality of existing applications, thereby achieving program-data independence.
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Related Questions
Characters that display on the screen, but do not print, indicating where the Enter key, the Spacebar, and the Tab key were pressed.
Answers
Characters that display on the screen, but do not print, indicating where the Enter key, the Spacebar, and the Tab key were pressed are called non-printable characters or control characters.
Non-printable characters are special characters that have specific functions in the formatting and control of text. They are used to represent various control actions rather than being displayed as visible characters. For example, when the Enter key is pressed, it generates a non-printable character known as the "carriage return" or "line feed" depending on the system. This character moves the cursor to the beginning of the next line. Similarly, the Spacebar generates a non-printable space character that creates a blank space between words or elements. The Tab key generates a non-printable character that moves the cursor to the next predefined tab stop.
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Select the correct answer
in the context of website navigation, what is a node?
a point at which the user chooses a certain path
a part of a web page that gives it a unique identity
a navigational aid that tells users know where they are
a hyperlink that leads to the home page
Answers
Answer:
a point at which the user chooses a certain path.
Answer:
a point at which the user chooses a certain path.
Explanation:
Construct the operation XOR from the basic Boolean operations AND, OR, and NOT.
Answers
The construction of the Boolean operation "XOR" in terms of AND and OR is \(AB' + A'B = XOR\)
What is Boolean logic?Boolean logic can be defined as a theory in mathematics which is either true (1) or false (0) and it was developed by the prominent British mathematician named George Boole.
The Boolean operators.Basically, there are three (3) main Boolean operators and these include:
AND (multiplication)NOT (complementation)OR (addition)In Boolean logic, the Boolean operator "XOR" is an eXclusive OR and it is typically used in cryptography for comparing two (2) input bits and generates a single output bit.
An example of the Boolean operation "XOR" can be constructed in terms of AND and OR as \(AB' + A'B = XOR\)
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This uses toner or ink while printing on paper or such a surface
Answers
Answer:Laser Jet printer or ink jet printer
Explanation: I have used both types of printers
debian is a community effort that supports many hardware platforms true or false?
Answers
The assertion is untrue because Debian is a group effort that supports a wide range of hardware systems.
What does computer hardware involve?The term "hardware" in the context of pcs refers to both external and internal gadgets and machinery that let you carry out significant priorities including input, output, storage, connection, processing, and more. Computer hardware comes in two flavors: internal and external.
What exactly are hardware devices?The physical components of a computers, such as its chassis, CPU, RAM, monitor, mouse, computer, computer data management, gpu, sound card, speakers, and motherboard, are referred to as hardware.
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1.what are the ways on how to maintain you hand tools properly?
2.why is it important to have proper maintenance of hand tools?
3.why do you think 5s is important in the workplace?
help:(
Answers
There are several ways to maintain your hand tools properly. Store them in a safe and organized manner, and regularly inspect them for any damage or wear and tear. Cleaning your hand tools after use helps prevent rust and corrosion, which can lead to deterioration and eventually make them unusable.
Proper maintenance of hand tools is important for several reasons. It prolongs their lifespan and ensures they function properly, which saves you time and money in the long run. Explanation-wise, when hand tools are well-maintained, they are less likely to break or malfunction, which can cause delays or accidents in the workplace. Additionally, having to constantly replace broken or worn-out tools can be costly and time-consuming, so proper maintenance is a smart investment.
5S is important in the workplace for several reasons. It promotes safety, efficiency, and productivity by organizing the workplace and reducing waste. 5S involves five steps: sorting, straightening, shining, standardizing, and sustaining. By sorting through materials and equipment and getting rid of anything that is not necessary, the workplace becomes safer and more efficient. Straightening involves organizing everything in a logical and accessible manner, which makes it easier to find and use tools. Shining refers to keeping everything clean and in good condition, which helps prevent accidents and prolongs the lifespan of equipment.
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The group of data that will be used in a chart or graph is called the
chart type.
data range.
data series.
chart elements.
Answers
Answer:
data series
Explanation:
just took the test
Answer:
C
Explanation:
Melinda is useing a BX cutter to prepare wire. What king of wire is she useing?
Answers
The type of wire Melinda is using is a type of armored cable that can be found in home wiring applications. This wire has a sheath that is comprised of interlocking metal armor. It is designed to be installed indoors and is available in a variety of gauges.
Armored cable is sometimes referred to as BX cable.The name "BX" is an abbreviation for "Brick X". This is due to the fact that the wire was initially used in the early 1900s as a replacement for knob-and-tube wiring, which was common in brick buildings.
Because BX wiring is covered in a metal sheath, it is considered more secure than other types of wiring.There are many different types of wire cutters, and each one is designed for a specific purpose.
BX cutters, like the one Melinda is using, are designed to cut through the metal sheath that encases BX cable. This is a necessary step when working with this type of wiring, as the metal sheath cannot be easily stripped away by hand.
With the help of BX cutters, Melinda can prepare her armored cable quickly and easily. This will allow her to complete her wiring project in a timely and efficient manner.
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How can you find the square root of 8 using the pow() function
Answers
import math
print(math.pow(8, 0.5))
You can find the square root of any number by squaring it by 0.5
define foreign employment
Answers
Answer:
The employment opportunity which was accessed by the people of one country in another country (foreign) for earning their living is called foreign employment.
Explanation: Thats the definition!
Directions. Read and analyze the sentences below. There are words or phrases to be corrected. Rewrite it on the blank accrording to what you have learned in the lesson.
Answers
Full question attached
Answer and Explanation:
1. There’s need to ask for help and advice from people who have the
knowledge and skills in making a simple electrical gadget.
2. Adapter is used to plug appliances that are far from the main power source.
3. Do not touch the metal pipes while you are doing electrical repairs.
4. Shut off the power at the main switch or circuit breaker and unplug the equipment when working on electricity.
5. Pliers are tools used to grip, pull or cut electric wires.
From the above, we have corrected some of the errors that could be made in everyday home appliances or home electricity. In number 4, it is also worthy of note that shutting off power at the main switch will only require emergency situations otherwise we need only shut off the one for the problem circuit and leave the rest.
b . Read the extract below , identify the Effects and the Causes and complete the Fish Bone Diagram ( 20 Marks )
College of Engineering and Management Library The management of Indira group of institutes has decided to promote the library as a central library of all the institutions run by Indira . Facing such an immense responsibility in a very short span of time made it obligatory to the library staff to organize the library system in a better and more competent way Still being at its initial stage , the library activities were encountering many issues frequently such as missing books misplacements , number of copies per titles , and allocation of work among the staff . Lot of brainstorming was conducted , and it was decided to solve these issues by implementing Quality Circle Program
Answers
1. Immense responsibility in a short span of time: The decision to promote the library as a central library of all the institutions has put a lot of pressure on the library staff to quickly organize the library system.
2. Initial stage of the library: Since the library is still at its initial stage, there may be some issues and challenges that need to be addressed.
3. Missing books and misplacements: The library activities are frequently encountering issues related to missing books and misplacements, which affects the overall functioning of the library.
4. Number of copies per titles: There may be discrepancies in the number of copies available for each title in the library.
5. Allocation of work among the staff: The staff may face challenges in efficiently distributing and managing their workload. Effects: Need for better organization: Due to the immense responsibility and challenges faced by the library staff, there is a need to organize the library system in a better and more competent way. Quality Circle Program: As a result of the brainstorming sessions.
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If you have an on-premise system and you use AWS Cloud to mirror data or replicate data from your on-premise system, which architectural pattern are you using?
Select one:
a.
Fully Working Low-Capacity Standby
b.
Pilot Light
c.
Multi-Site Active-Active
d.
Backup and Restore
Answers
The architectural pattern that corresponds to using AWS Cloud to mirror or replicate data from an on-premise system is the Multi-Site Active-Active pattern. By using the Multi-Site Active-Active pattern, organizations can achieve increased scalability, resilience, and disaster recovery capabilities.
In the Multi-Site Active-Active pattern, both the on-premise system and the AWS Cloud infrastructure are active and operational simultaneously. The on-premise system serves as one site, while the AWS Cloud serves as another site. Data is replicated or mirrored between these two sites, ensuring that both systems are synchronized and up-to-date.
This pattern allows for high availability and fault tolerance. In case of a failure or disruption in one site, the other site can seamlessly take over and continue serving the workload. The data replication ensures that the systems stay synchronized, minimizing any potential data loss.
It allows them to leverage the flexibility and scalability of the AWS Cloud while maintaining the on-premise system for certain specific requirements or to distribute the workload across multiple locations.
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write an expression that evaluates to true if the value of the string variable s1 is greater than the value of string variable s2.
Answers
The expression that evaluates to true if the value of the string variable s1 is greater than the value of string variable s2 is strcmp(str1, str2)>0.
What is strcmp?
Strcmp is a function in C language to compare two string value character by character. Syntax for strcmp is,
int strcmp(const char*str1, const char*str2)
strcmp will return the following integer values,
positive int value if str2 is less than str1negative int value if str1 is less than str20 int value if str1 is identical or equal to str2Therefore, to give true value the expression we need to write is strcmp(str1, str2)>0.
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{Chance to earn 100 points!!!}
Create a function (using Python) to determine how much it'll cost for gas to drive to a destination with the following arguments:
-miles per gallon
-number of miles
-cost per gallon
Trip #1: You are driving from Winchester, VA to Pittsburgh, PA, which is about 190 miles. The cost of gas in PA is about $3.62/gallon. Your car gets about 25 mpg. Find the cost you'll pay for gas.
Trip #2: You are driving from Winchester, VA to Washington, DC which is about 75 miles. The cost of gas in Virginia is about $3.14/gallon. You decide to take your friend's car, which gets about 28 mpg. Find the cost you'll pay for gas.
Trip #3: You are driving from Winchester, VA to Myrtle Beach, SC which is about 460 miles. The cost of gas in North Carolina is about $3.12/gallon. You decide to take your mom's old van, which only gets about 20mpg. Find the cost you'll pay for gas.
Answers
Here’s a Python function that calculates the cost of gas for a trip:
def calculate_gas_cost(mpg, miles, cost_per_gallon):
gallons = miles / mpg
cost = gallons * cost_per_gallon
return cost
For Trip #1, you would call the function like this:
calculate_gas_cost(25, 190, 3.62)
The cost of gas for this trip would be $27.56.
For Trip #2, you would call the function like this:
calculate_gas_cost(28, 75, 3.14)
The cost of gas for this trip would be $8.13.
For Trip #3, you would call the function like this:
calculate_gas_cost(20, 460, 3.12)
The cost of gas for this trip would be $86.88.
I hope this helps! Let me know if you have any other questions.
Answer:
def gasCost(MpG, numMiles, CpG):
# Figuring out number/gallons
totGallons = numMiles / MpG
# Finding cost
totCost = totGallons * CpG
# You can round up using the math module, but as you have not mentioned modules, I'll leave it in an unrounded state
return totCost
Explanation:
Fairly simple stuff, though I chose not to round up, as that would need another module. You can use the function by putting it in a print statement and seeing what it'll return, E.G:
print(gasCost(25, 190, 3.52)
20
Select the correct answer.
Part of social health means that you make positive contributions to your community,
ОА.
True
OB
False
Reset
Next
Answers
Answer:
true
Explanation:
because my 8 ball said so
Answer:
True
Explanation:
What is one common way to select a package name for a project?
Select one:
a.
Use a company's domain name for uniqueness
b.
Use a very short name to save typing
c.
Use a secret phrase like a password
d.
Use an encryption key for security
Answers
Answer:
Jeez idrk
Explanation:
Akkaqka
tiny electrical paths to connect everything together is called ? A. graphic card B. audio card C. CPU D. Motherboard
Answers
Answer:
Option C, or the CPU.
Explanation:
The audio card simply translate code into sound, the graphic card turns code into graphics, CPU runs electric through tons of little electric pathways, and the motherboard is the object of which all of the above are rested on and connects them together.
SOMEONE HELP ME ITS KINDA EASY
Answers
Answer:
USB COMPUTER, CONTROL,COMPUTER, ECT ECTT
Explanation:
At least 3 facts I learned about our Amazon Volunteer or their career experience:
Answers
Answer:
Amazon's Global Month of Volunteering includes hundreds of partners. Tens of thousands of employees around the world are coming together to support over 400 organizations in their local communities.
____, as a technique, is quite similar to e-mail bombing. However, it is accomplished differently and involves enrolling potentially hundreds of target users through e-mail lists and distributed e-mail message systems.
Answers
The term mentioned in the question is "list bombing." It is a technique that is quite similar to e-mail bombing. However, it is accomplished differently and involves enrolling potentially hundreds of target users through e-mail lists and distributed e-mail message systems.
In list bombing, attackers will obtain email addresses and create email addresses in bulk that are often fake, and then add them to a large number of email lists. Through this method, they gain access to the user's email account, and as a result, they receive several emails that they did not opt for. This technique is used to overload email accounts, resulting in lost or delayed legitimate emails. List bombing is a problem because users frequently abandon email accounts as a result of being overwhelmed by unwanted emails, and attackers can later use these accounts to gather information or commit fraud.In conclusion, list bombing is a malicious technique that attackers use to flood target users' email accounts with unwanted emails.
Attackers use this technique to gain access to user's email accounts and later use them to gather sensitive information or commit fraud. It is, therefore, important for email providers to take proactive steps to detect and mitigate this threat to protect their users' email accounts.
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9) WAp to display the given series
1 2
1 2 3
1 2 3 4
1 2 3 4 5
Answers
The program that displays the given series is exemplified below. Also, see the meaning of Java.
What is Java?Java is a class-based, object-oriented general-purpose programming language.
The programming language is designed so that developers may write code anywhere and run it anywhere, regardless of the underlying computer architecture.
It is also known as write once, run anywhere (WORA)
Sample program:
public class KboatPattern
{
public static void main(String args[]) {
for (int i = 1; i <= 5; i++) {
for (int j = i; j >= 1; j--) {
System.out.print(j + " ");
}
System.out.println();
}
}
}
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Which object is a storage container that contains data in rows and columns and is the primary element of Access databases? procedures queries forms tables
Answers
Answer:
tables
Explanation:
For accessing the database there are four objects namely tables, queries, forms, and reports.
As the name suggests, the table is treated as an object in which the data is stored in a row and column format plus is the main element for accessing the database
Therefore in the given case, the last option is correct
Answer:
D. tables
Explanation:
took the test, theyre right too
What type of software has been developed to enable users to make use of the vast amount of data being collected and organized today?.
Answers
Answer:
The type of software that has been developed to enable users to make use of the vast amount of data being collected and organized today is Analytics software.
What is Software?
A set of instructions, data, or programs used to run computers and carry out specified activities is referred to as software. It is the inverse of hardware, which describes a computer's physical components. Software is a catch-all phrase for apps, scripts, and programs that execute on a device.
Analytics software is a sort of software that has been developed to allow users to make use of the large quantity of data that is being gathered and structured nowadays.
It is used to compute the performance of digital content and to convert business information into reports. Therefore
Explanation:
ABC Ltd makes a special type of electronic components. The unit
cost of making this component is as follows:
Cost per Unit (R)
Direct
materials
Answers
The unit cost of making the electronic component for ABC Ltd includes the cost of direct materials.
To calculate the unit cost of making the electronic component, we need to consider the cost of direct materials. The direct materials cost represents the cost of the materials used specifically for manufacturing the component. It includes the cost of raw materials and any other materials directly incorporated into the component.
The exact cost per unit of direct materials would depend on the specific materials used in the manufacturing process and their respective prices. To determine the unit cost, ABC Ltd needs to calculate the total cost of direct materials used and divide it by the number of units produced.
For example, let's assume the total cost of direct materials used in a production run is R10,000 and 1,000 units of the electronic component were manufactured. The unit cost of direct materials would be calculated as follows:
Unit Cost of Direct Materials = Total Cost of Direct Materials / Number of Units
Unit Cost of Direct Materials = R10,000 / 1,000
Unit Cost of Direct Materials = R10
In this example, the unit cost of direct materials for ABC Ltd's electronic component is R10.
The unit cost of making the electronic component for ABC Ltd includes the cost of direct materials. This cost is determined by calculating the total cost of direct materials used and dividing it by the number of units produced.
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Once you have chosen a topic, what should you do before beginning the research process?
a. Find as many possible facts and details on C. Discuss your idea with others
your topic
b. Choose a position
d. None of these
Please select the best answer from the choices provided
Ο Α
B
С
D
Kiki
Answers
Find as many possible facts and details on
Answer:
A
Explanation:
today, most network designers use a three to five year planning horizon. (True or False)
Answers
The statement given "today, most network designers use a three to five year planning horizon." is true because today, most network designers use a three to five year planning horizon.
Most network designers use a three to five-year planning horizon to design networks. This planning horizon allows designers to anticipate future growth, technological advancements, and changes in the business environment. By considering these factors, designers can create networks that are scalable, adaptable, and efficient.
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What is the principle where all data should be treated equally?
Answers
The principle of data equality states that all data should be treated with equal respect, free from bias and discrimination, for fair and reliable analysis.
The principle that all data should be treated equally is known as the principle of "data equality." This principle holds that all data, regardless of its source or format, should be treated with the same level of respect and given equal consideration in processing and analysis. This means that data should not be subjected to bias or discrimination based on factors such as its origin, type, or format, and should be processed and analyzed in a consistent and impartial manner. The principle of data equality is an important consideration in fields such as data science, where it is critical to ensure that data is treated objectively and fairly in order to produce accurate and reliable results.
Adhering to the principle of data equality helps to ensure the validity and integrity of the data, leading to more trustworthy and actionable insights and decisions based on the analysis.
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What are the 5 core concepts explored in the computer science standards?
Answers
Look at the slide. How could the slide best be improved? By reducing the number of visual aids by increasing the font size by darkening the background color by reducing the amount of text in each bullet
Answers
This slide would best be improved: D. by reducing the amount of text in each bullet.
What is a slide?A slide refers to a single-page document of a presentation that consist of text-based information or images, which can be used to teach, explain and educate an audience on a subject matter, event or idea.
This ultimately implies that, a slide can enhance communication effectively and efficiently when used with the right features and settings.
In accordance with the six by six guideline, the best way to improve the slide would be by reducing the amount of text in each bullet, so as to make them concise and less cluttered in .
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Answer:
D
Explanation:
d o double g