In a relational model, data and relationships are defined using a collection of ____________ organized into categories of data known as _____________.

Answers

Answer 1

In a relational model, data and relationships are defined using a collection of tables organized into categories of data known as fields.

Write a short note on relational model.

The relational model, an easy-to-understand method of representing data in tables, is the foundation of relational databases. In a relational database, each row in the table represents a record with a distinct ID known as the key.

The relational model is employed to illustrate the data storage capabilities of relational databases. In essence, relational databases store the data in column and row structure, or table relations. The records or data relating to the table values are gathered in each row and column of the table. Simpleness, structural independence, ease of use, query capacity, data independence, and scalability are some benefits of the relational paradigm in DBMS.

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Related Questions

the concept or philosophy of uniformitarianism is commonly summarized by saying group of answer choices catastrophic forces dominate earth's geological history. conditions existing today cannot form rocks as in the past. rocks cannot be made in the laboratory. the present is the key to the past.

Answers

This statement is the basis of uniformitarianism and means that the processes and forces that are currently shaping the Earth's surface have done so over geologic time, meaning that the same processes have been in operation for millions of years.

The philosophy of uniformitarianism proposes that there is no discontinuity in natural laws and the rates of geological processes have been constant throughout the Earth's history, which is contrary to the notion of catastrophic forces dominating Earth's geological history.  The key to understanding Earth's history, according to uniformitarianism, is the study of the processes that are occurring in the present.

It is through this study that we can make informed deductions about the Earth's past. Furthermore, this principle emphasizes the idea that conditions existing today cannot form rocks as they did in the past. Lastly, rocks can indeed be made in the laboratory, which contradicts the notion of the concept of uniformitarianism. In conclusion, the principle of uniformitarianism is important in the field of geology as it has enabled scientists to make accurate predictions about the Earth's past based on the current processes occurring in the present.

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How do we use economics to study culture? Identify at least two tools or indicators. Then
describe what you can learn from one of those tools or indicators and provide an example.

Answers

Cultural indicators are instruments that act as a point of reference for the comprehension of phenomena that take place within the cultural realm. Cultural economy is the area of economics that focuses on how culture influences economic outcomes.

For instance, individualism, the view that capitalism would be the foundation of freedom, exceptionalism, gun ownership, etc. represent cultural values in the United States that have an impact on the economy and national defense. The impact of these traditional influences on GDP would be the second step of this study procedure.

For instance, Pakistan is an Islamic nation that does not support interest rates in the banking system, which has a significant impact on GDP. As a result, the culture does not believe rather impacts the economy.

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Great circle are useful for planning airplane routes because

Answers

Answer:

this is useful because they represent the shortest distance between two points on a sphere.

Explanation:

Due to the earth's rotation, sailors and pilots using great circle routes must constantly adjust their route as the heading changes over long distances.

andres1000

What is the benefit of cooling down after exercise? (5 points) Group of answer choices It allows the body to increase blood flow. It keeps blood from pooling in the limbs. It prepares the body for exercise. It keeps the muscles flexed.

Answers

Answer:

It keeps blood from pooling in the limbs.

Explanation:

Blood pooling may be defined as the condition where there is blood gathering or 'pooling' in the veins of limbs and legs. It results due to rush of blood in the veins when the body temperature rises and heart beat increases.

When we exercise our body temperature increases and the blood flow increases in the body. So the body temperature has to come down. Hence cooling down is very essential after cooling. It also helps to improve the physical fitness and reduces the HR.

What plate movement do you think is the most important? Why?

Answers

Answer:

I personally thinks convection is the most important one

Explanation:

Do rocks always follow the same steps when they go through the rock cycle?

Answers

no. not always......

What protects Earth from the solar wind?

1) A giant umbrella
2) Our atmosphere
3) the moon
4) Our magnetic field

Answers

Your answer will be 4, our magnetic field.

Earth itself is largely protected from the solar wind by its magnetic field. However, some of the charged particles are trapped in the Van Allen radiation belt.

Hope this helps, have a great day! :)

Now take a look at the population pyramid for China. Select the year 1980. Compare this pyramid to the 1970 pyramid. What are some similarities and differences? What evidence in the data indicates a change?

Now take a look at the population pyramid for China. Select the year 1980. Compare this pyramid to the
Now take a look at the population pyramid for China. Select the year 1980. Compare this pyramid to the

Answers

Answer:

The two pyramids are quite similar from the age of 25 and higher, as might be expected. The biggest change is the rapid drop-off of people under the age of 10. Children aged 0-4 went from almost 16% of the total population in 1970 to less than 10% in 1980. This data clearly indicates that the one-child policy caused a dramatic change in birth rates between 1970 and 1980.

Explanation: Exact answer from tutorial.

Answer:

The two pyramids are quite similar from the age of 25 and higher, as might be expected. The biggest change is the rapid drop-off of people under the age of 10. Children aged 0-4 went from almost 16% of the total population in 1970 to less than 10% in 1980. This data clearly indicates that the one-child policy caused a dramatic change in birth rates between 1970 and 1980.

Explanation:

it's the exact answer in Plato/Edmentum

Restate the Question into a statement.

How can Agricultural Farming help sustain the future?

Answers

sustainable agriculture benefits the environment through helping maintain soil quality, reducing erosion, and preserving water.

When an eclectic current flows through a wire a magnetic field is created. To increase the power of the magnetic field you would __________________.
Decrease the number of coils in the wire
Keep the same number of coils in the wire
Increase the number of coils in the wire
Remove the coils from the wire

Answers

Answer:

b

Explanation:

Answer:

B

Explanation:

riparian zones are important to the natural environment because they _______. a. contain pollution from runoff b. reduce soil erosion c. support diver

Answers

Riparian zones are important to the natural environment because they support diverse plant and animal species.

Riparian zones refer to the areas bordering rivers and other bodies of water. This area can also be referred to as the “streamside,” and it plays an important role in ensuring the ecosystem remains healthy and robust. Riparian zones are important because they provide a range of benefits, including:

Supporting diverse plant and animal species, Protecting the water body from pollutants, Filtering water runoff from nearby areas, Reducing soil erosion, Regulating the water temperature in the surrounding area, which is important for aquatic life, Playing a key role in the nutrient cycle of the ecosystem.

Therefore, it can be concluded that riparian zones are important to the natural environment because they support diverse plant and animal species.

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The Old Man in the Mountain is a geological formation in the White Mountains of New Hampshire Whion of the
following statements best describes the effects of natural erosion on this formation?
A Man-made supports and wires were able to prevent the erosion of the formation, and it is still
viewable today
В. Natural erosion caused the formation to collapse despite people's efforts to save it.
C. Natural erosion did not affect this formation, its collapse was a result of man-made erosion
D. Natural erosion is more powerful than man-made erosion.​

Answers

Answer:B

Explanation:I took the quiz

Answer:

THE ANSWER IS B

Explanation:

Human's cannot prevent natural erosion, they can only delay it. I also took the quiz on Edge and got 100%

according to the map in uman, figure 8.8, where is global lightning flash density lowest?

Answers

According to the map in Uman, figure 8.8, the global lightning flash density is lowest over the Polar Regions (north and south poles).

Lightning flash density refers to the number of lightning flashes per unit area in a given time period. The lightning flash density is commonly measured in terms of flashes per square kilometer per year or flashes per square kilometer per second.Given that Uman's map shows the global lightning flash density, it indicates the average number of lightning flashes that occurred per square kilometer globally, based on the data obtained for the specified period.In conclusion, according to the map in Uman, figure 8.8, the global lightning flash density is lowest over the Polar Regions (north and south poles).

Global lightning flash density is generally lower near the Earth's poles compared to other regions. This is primarily because polar regions experience colder temperatures and less convective activity, which are key factors for the development of thunderstorms and lightning. The polar regions, including the Arctic and Antarctica, have lower atmospheric instability and moisture content, resulting in fewer thunderstorm occurrences and, consequently, lower lightning flash density. However, it's important to note that lightning can still occur in polar regions, particularly during warmer months or in regions closer to subpolar areas.

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a zone of high atmospheric pressure results when there is relatively __________ air aloft.

Answers

A zone of high atmospheric pressure results when there is relatively sinking air aloft.

As air cools, it becomes denser and heavier, causing it to sink towards the surface. This sinking air displaces air at the surface, which creates an area of high pressure. In addition to sinking air, high pressure zones are also characterized by dry weather and clear skies.

High pressure systems are often associated with fair weather conditions as the sinking air inhibits the formation of clouds and precipitation. Conversely, low pressure systems result in rising air and the potential for stormy weather.

The movement and interaction of high and low pressure systems are responsible for weather patterns across the globe. Understanding the behavior of these systems is crucial in predicting weather conditions and preparing for potential hazards such as hurricanes and tornadoes.

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how does the buoyancy of magma cause volcanic eruptions

Answers

Answer:

The magma rises and collects in chambers within the crust. As magma fills the chamber, pressure grows. If the pressure gets high enough, the magma can break through the crust and spew out in a volcanic eruption.

Explanation:

Buoyancy of magma: Magma only migrates toward the surface because it is less dense (lighter) than surrounding rock. Indeed, it is the weight of surrounding rock that forces it from its conduits under pressure during eruptions. Reduce the force of gravity and you reduce the buoyant force propelling magma upward.

why is troposphere so important for the existence of humans and natural environment on Earth?​

Answers

Explanation:

The water cycle helps form clouds, which in form can help produce rain, sleet, snow and freezing rain. As you see, the troposphere is an important layer in Earth's Atmosphere, as it is the layer that we live in and the layer that gives us weather.

Answer: short answer it provides the air we need to survive

Explanation: long answer

The troposphere is made up of several different gases. And, there are a couple of interesting things about the gases. The first is that the troposphere is made of 78% nitrogen, which is by far and away the most plentiful gas in our air. Also, oxygen, the gas that is so crucial to life on the planet, only makes up 21% of the air. All the other gases combined make up the remaining 1%, including carbon dioxide. Also regulates our weather and temperatures on a regular basis

HELP ME PLS WILL MARK THE BRANLIEST 50 POINTS!!!!!!!!!!!!!

HELP ME PLS WILL MARK THE BRANLIEST 50 POINTS!!!!!!!!!!!!!

Answers

Answer:

Israel

Explanation:

Type the correct answer in the box.
a local school installed a new flagpole that has two lights on both sides of the flagpole that are 40 feet from each other. the distance
between one of the lights and the flag is 30 feet.
30 feet
x feet
what is the value of x?
the value of x is
30 feet
feet

Answers

the distance between one of the lights and the flag is 30 feet, distance between two light flagpole is 40 feet, The value of x is 20 feet.

The measurement of distance is the separation of two objects or points, and it can be quantitative or occasionally qualitative. It can refer to a physical length in physics or to an estimate based on other factors in common usage. The term is frequently used metaphorically to denote a measurement of the degree of separation between two similar objects, such as statistical distance between probability distributions or edit distance between strings of text. This is due to the fact that human intellect draws heavily on spatial cognition as a source of conceptual analogies. In the social sciences, distance can refer to a variety of separations, including social or psychological distance.

   

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A star begins to form when a cloud of dust and gas collapses inward as a result of gravitational forces.

true or false​

Answers

Answer:

true- As the cloud collapses, the gravitational force pulling the particles together becomes stronger than the forces holding them apart. This causes the cloud to collapse in on itself, which in turn causes the temperature and pressure in the center of the cloud to increase. These conditions are necessary for star formation.

Explanation:

Give me brainliest if that helped :)

Rainforest Riddles
High in the trees, I screech and shout.
I can swing by my tail to move about!
Who am I?
2.
I am a very bright blue and have
wings that flap. I am very beautiful
to look at.
Who am I?
3.
On silent feet I prowl. Watch me
pounce and hear me growt
Who am I?
4.
I am very long and I slither and slide.
I can coil my body and use camouflage
to hide.
Who am I?

Answers

Answer:

1 You are a monkey.

2 You are a blue morpho butterfly.

3 You are a jaguar.

4 You are a snake.

What hotels are near Marcus Arnold Cinema?

Answers

The first hotel near Marcus Arnold Cinema is the Hyatt Place Chicago/O'Hare. This hotel is located just four miles from the cinema and offers spacious rooms, complimentary breakfast, an outdoor pool, and a 24-hour fitness center.

It also has a shuttle service to the airport and the cinema, making it a great choice for travelers. The second hotel is the Holiday Inn Express & Suites Chicago O'Hare Airport. This hotel is located about five miles from the cinema, and offers modern rooms, a complimentary breakfast, a 24-hour fitness center, and free wifi.

It is also within walking distance of the Metra station, making it an ideal option for easy access to the cinema. The third hotel near Marcus Arnold Cinema is the Crowne Plaza Chicago O'Hare.

This hotel is located six miles from the cinema and offers comfortable guest rooms, a complimentary breakfast, an indoor pool, and a fitness center.

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Atolls are geological formations made up of :

Atolls are geological formations made up of :

Answers

The correct answer B. Coral.

Explanation

An atoll is a geological formation that is an island of coral origin that forms in the ocean. Atolls are generally ring-shaped. These islands are formed when reefs formed around a volcanic island once it sinks into the ocean. Many of the atolls on earth are in the Pacific Ocean area. According to the above, the correct answer is B. Coral.

Why is there such a
difference in the time
the sun sets in July
vs. the time the sun
sets in December?

Answers

Answer:

the December solstice occurs when Earth is near its perihelion , or closest point to the sun ,  around which time we're moving fastest in orbit .

Explanation:

Question I (Human Geography) The table bellow shows the population distribution and land areas of five States of country B in the year 2010- (ke the data to answer the following question. STATE Population in millons) Total land area (in km²) 14D, WOO 98, CUD 35,000 86,00 3.2 millions 5.4 million 7.4 million 6.5 million 4.2 million V * a) Cakulate the :) The total population (2mcks) ii) The total land area (2 mrks) ii) Population density of country B

Answers

i) The total population of country B is 22.5 million.

ii) The total land area of country B is 23.5 million km².

iii) The population density of country B is approximately 0.957 million people per km².

It is given in the question

14D | 3.2 | 5.4 million

WOO | 5.4 | 7.4 million

98 | 7.4 | 6.5 million

CUD | 6.5 | 4.2 million

a) Calculation:

i) The total population:

Total population = Population of 14D + Population of WOO + Population of 98 + Population of CUD

Total population = 3.2 + 5.4 + 7.4 + 6.5

Total population = 22.5 million

ii) The total land area:

Total land area = Land area of 14D + Land area of WOO + Land area of 98 + Land area of CUD

Total land area = 5.4 + 7.4 + 6.5 + 4.2

Total land area = 23.5 million km²

ii) Population density of country B:

Population density = Total population / Total land area

Population density = 22.5 million / 23.5 million km²

Population density ≈ 0.957 million people per km²

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the northern and southern lights are caused by emission of photons in earth's upper atmosphere from ionized (excited) nitrogen and oxygen atoms caused by the solar wind.

Answers

the northern and southern lights are caused by emission of photons in earth's upper atmosphere from ionized (excited) nitrogen and oxygen atoms caused by the solar wind : True.

the northern light is also called aurora borealis , also commonly known as the polar lights, is a natural light display in Earth's sky, predominantly seen in high-latitude regions. Auroras display dynamic patterns of brilliant lights that appear as curtains, rays, spirals, or dynamic flickers covering the entire sky.the southern light is also called aurora australis, Just like the northern lights, the southern lights occur when electrically charged solar particles and atoms in the Earth's atmosphere collide with gases like oxygen and nitrogen, causing those gases to emit light.here The solar wind is created by the outward expansion of plasma (a collection of charged particles) from the Sun's corona (outermost atmosphere). This plasma is continually heated to the point that the Sun's gravity can't hold it down. It then travels along the Sun's magnetic field lines that extend radially outward.

full question : the northern and southern lights are caused by emission of photons in earth's upper atmosphere from ionized (excited) nitrogen and oxygen atoms caused by the solar wind: True or False

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tác động của cuộc CMKH và CN hiện đại.

Answers

Answer:

ghi bằng tiếng anh mới có người giúp nha

How are the plate boundaries in Iceland and Chile similar? How are they different?

Answers

The way that plate boundaries in Iceland and Chile similar is that both are  have volcanoes  and Earthquakes. The way that they are different is that Iceland  is  one that lies in the Mid-Atlantic Ridge while that of Chile is in the convergent plate boundary.

What type of plate boundary is the island of Iceland?

Iceland is situated on the Mid Atlantic Ridge, a divergent plate boundary where the Eurasian Plate and North American Plate are moving apart. Magma or molten rock rises to the surface and erupts as lava to form new ocean crust as the plates separate.

Two tectonic plates can diverge from one another, creating a border. As magma rises from the Earth's mantle to the surface and solidifies to form new oceanic crust, earthquakes frequently occur along these boundaries.

Chile is located on top of the South American tectonic plate, along with the other nations of the continent. The Nazca Plate joins the Pacific Plate at a divergent plate boundary known as the East Pacific Rise to the west of Chile. This region is beneath the Pacific Ocean.

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You have studied a river as part of your own fieldwork. Evaluate the reliability of your river conclusions. 8 marks
Carding Mill Valley or any river case study

Answers

Rivers are frequently used as the subject of geographical investigations. They are dynamic systems, which means they are continually changing, which explains why.

What do you mean by Rivers?

A river is a body of water that flows downward due to gravity and has the appearance of a ribbon. A stream, creek, or brook is a flowing body of water that is smaller than a river.

A river may be wide and deep, or it may just be shallow enough to be crossed by wading.

Only during the rainy season, when the water table is higher than the riverbed, do periodic rivers receive their water supply from underground.

Because they are a valuable natural resource, rivers are crucial to a nation's economy.

By transporting mineral-rich silt, they not only supply water for irrigation operations but also ensure soil fertility.

They are helpful for transportation and navigation, and they also produce hydroelectricity.

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HELPPP ASAP.
Look closely at this map. What occurrence in the middle of the Pacific Ocean affects the pink shaded areas along the coastlines?

A. Warm water is rising in the middle of the ocean and causing
storms that affect all the coastlines.

B. The sea floor is receding, pulling the oceanic crust froh under the
continental crust.

C. The sea floor is spreading, pushing the oceanic crust against the continental crust.

D. Strong hurricanes that form in the middle of the ocean are
reaching the coastlines, where they set off electrical storms.

HELPPP ASAP.Look closely at this map. What occurrence in the middle of the Pacific Ocean affects the

Answers

Which of the following soil-building processes contributed most to making the shaded area on the map suitable for agriculture? Floods deposited rich silt over the land in a soil-building process that made the land fertile.

Answer: B, the sea floor is spreading.

Sediments deposited directly by glaciers as they melt are characterized by ____________.
a. uniformly coarse grain size
b. uniformly fine grain size
c. an absence of sorting
d. graded bedding

Answers

The correct answer is c. an absence of sorting. Sediments deposited directly by glaciers as they melt are known as glacial till or glacial drift.

These sediments typically exhibit an absence of sorting, meaning that the particles are not organized or separated by size. Glacial till is a mixture of different-sized particles, including rocks, boulders, sand, silt, and clay, that were transported and deposited by the glacier.

The lack of sorting occurs because glaciers can transport a wide range of sediment sizes and deposit them together as the ice melts. This results in a mixture of different-sized particles within the deposited sediment, without distinct layering or sorting based on grain size.

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