A DBMS acts as a conduit between the database and the applications that will use it, enabling users to access, modify, and control how the data is arranged and optimized.
Data points that are connected to one another are stored and accessible in a relational database, which is a form of database. The relational model, an easy-to-understand method of representing data in tables, is the foundation of relational databases. Data items are requested from the database by application programs, which are created using a combination of the DBMS's data manipulation language and a traditional programming language. The DBMS locates and provides the data elements requested by the application programs.
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I would say that you should use 32 pt font
They are arranged the way they are because of the QWERTY layout. It was used to slow down how people typed so they wouldn't get the typewriter jammed. Hope this helps. :)
Hey!
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Definition:
A "for loop" is something used for repeating things over a list of items. For instance, a list or a dictionary.
Code:
colors = ["red", "green", "blue"]
for x in colors:
print(x)
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Definition:
A "while loop" is is something used for carrying out a set of lines that are true.
Code:
n = 1
while i < 4:
print(n)
n += 1
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Real-Life Example:
A real-life example would if I was a manager or boss for a company say that everyone was off a certain day. Like, if I said everyone was off for Christmas the 25th. If I had 1000 employees that would take a very long time to send an email to everyone. Instead of sending an email to everyone I can program code that uses "for loops" and "while loops" to create a message and send it to everyone.
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Hope This Helped! Good Luck!
Answer:
- import statistics
- def st_dev(file_name):
- with open(file_name) as file:
- data = file.readlines()
- numList = []
- for x in data:
- numList.append(int(x))
-
- return statistics.pstdev(numList)
- print(st_dev("text1.txt"))
Explanation:
The solution code is written using Python.
To ease the calculation task, we can import Python statistics module to use the pstdev method to calculate the population standard deviation of a list of numbers (Line 1).
Next, create a st_dev function that take single argument file_name (Line 3). In the function, it will open the input file and read the data line by line (Line 4-5). Create a for loop to traverse through each line of the data which is an integer and append it to numList (Line 7-8). We can pass the numList to pstdev method (Line 10) and return the resulting standard deviation value as output.
We test the function by passing a file which hold a list of integer values in each line (Line 12).
8
9
12
11
21
15
16
10
7
13
And the output we shall get is 4.019950248448356
