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1 year ago

What is the other name for data preparation stage of knowledge discovery process.

Mathematics

1 answer:

dmitriy555 [2]1 year ago

4 0

ETL is the other name for 'Data Preparation' stage of knowledge discovery process.

Explanation:

ETL can be defined as a technique for extracting data from various RDBMS systems.
The extracted data will then be 'transformed and loaded' into Data warehouse system.

The development of an ETL process include various stake - holders, analysts, developers, testers and it is technically challenging.

This process is a recurring process where it needs to be automated, and well - documented.

It is also considered to be another name for 'Data Preparation' Stage of 'Knowledge Discovery Process'.

Learn more about Data Preparation at:

brainly.com/question/20116147

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Artemon [7]

Answer:

$\huge\boxed{(2,\ 3);\ (-1,\ 6)}$

Step-by-step explanation:

$f(x)=x^2-2x+3\to y=x^2-2x+3\\f(x)=-x+5\to y=-x+5\\\\\left\{\begin{array}{ccc}y=x^2-2x+3&(1)\\y=-x+5&(2)\end{array}\right$

substitute (1) to (2):

$x^2-2x+3=-x+5$ add x to both sides

$x^2-2x+x+3=-x+x+5$

$x^2-x+3=5$ subtract 5 from both sides

$x^2-x+3-5=5-5$

$x^2-x-2=0\\\\x^2+x-2x-2=0\\\\x(x+1)-2(x+1)=0\\\\(x+1)(x-2)=0\iff x+1=0\ \vee\ x-2=0\\\\\boxed{x=-1\ \vee\ x=2}$

substitute the values of x to (2):

$x=-1\\\\y=-(-1)+5=1+5=6\\\\\huge\boxed{(-1,\ 6)}\\\\x=2\\\\y=-2+5=3\\\\\huge\boxed{(2,\ 3)}$

3 0

3 years ago

Solve the following inequality: 10t + 7 , 200 > 21 , 000

Alla [95]

Answer:

t > 1380

Step-by-step explanation:

Subtract 7200 from both sides

10t + 7200 - 7200 > 21000 - 7200

Simplify

10t > 13800

Divide both sides by 10

10t/10 > 13800/10

Simplify

t > 1380

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3 years ago

Multiply 72.22 and 4.1

viktelen [127]

Answer: 316.52

Step-by-step explanation:

77.2*4.1 = 316.52

If you have problems with multiplying decimals:

Multiply the numbers just as if they were whole numbers.

1.Line up the numbers on the right - do not align the decimal points.

2.Starting on the right, multiply each digit in the top number by each digit in the bottom number, just as with whole numbers.

3.Add the products.

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3 years ago

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Gnoma [55]

Answer:

Step-by-step explanation:

5 x 7 = 35

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3 years ago

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The average fleet-wide performance of light duty trucks has made constant improvement since 1980. For example, the time for the

andrew11 [14]

A) T(m) = -0.16m +331.3

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3 years ago