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antiseptic1488 [7]
3 years ago
9

As we discussed in class, with the explosion of huge volumes of unstructured data, a new breed of database technologies have eme

rged and have become popular. Clearly, these new database technologies like Dynamo, Bigtable, and Cassandra are critical technology to the companies that created them. Why did they allow their employees to publish academic papers about them? Why did they not keep them as proprietary secrets? (
Computers and Technology
1 answer:
Ronch [10]3 years ago
5 0

Answer:

Dynamo, Bigtable, and Cassandra are NoSQL data stores being used by some of the worlds biggest IT businesses such as Amazon.

These programs were developed to solve a specific or unique business problem. The initial plan was not to commercialize them.

 

Cheers!

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How many generations of computer languages have there been since the middle of the 20th century?
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Write a program that unpickle's employee dictionary and while reading from the dictionary, it allows users to lookup an employee
melamori03 [73]

Answer:

Check the explanation

Explanation:

from Employee import *

import pickle

import random

def unpickle_employee(filename):

file=open(filename,'rb')

data=pickle.load(file)

file.close()

return data

def pickle_employee(data,filename):

file=open(filename,'wb')

pickle.dump(data,file)

file.close()

if __name__=='__main__':

filename="Employees.dat"

'''

E=Employee("Ajay",1,"R&D","Manager")

data={}

data[1]=E

pickle_employee(data,filename)

'''

data=unpickle_employee(filename)

 

while True:

print("\nData In Employee.dat")

for d in data:

print("Employe data: ",data[d].get_name(),"({},{},{})".

format(data[d].get_id_number(),data[d].get_department(),data[d].get_job_title()))

 

print("\n\n\t\tMenu")

print("To add new Employee, Enter a")

print("To update any Employee, Enter u")

print("To delete any Employee, Enter d")

print("Enter anything to quit")

choice=input("Enter: ")

if choice=='a':

id_number=random.randrange(100,200,1)

while id_number in data:

id_number+=1

if id_number>=200:

id_number=100

name=input("Enter the Name: ")

department=input("Enter the Department: ")

job_title=input("Enter the job title: ")

E=Employee(name,id_number,department,job_title)

data[id_number]=E

elif choice=='u':

id_number=int(input("Enter the Employee id_number to update: "))

for d in data:

print(id_number,d,d==id_number)

if id_number in data:

print("Employe data: ",data[id_number].get_name(),"({},{})".

format(data[id_number].get_department(),data[id_number].get_job_title()))

print("\nPlease Enter the details")

name=input("Enter the Name: ")

department=input("Enter the Department: ")

job_title=input("Enter the job title: ")

E=Employee(name,id_number,department,job_title)

data[id_number]=E    

else:

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elif choice=='d':

id_number=int(input("Enter the Employee id_number to delete: "))

if id_number in data:

print("Employe data: ",data[id_number].get_name(),"({},{})".

format(data[id_number].get_department(),data[id_number].get_job_title()))

choice=input("\nPlease Enter y to confirm, anything else to cancel: ")

if choice=='y':

del data[id_number]

else:

print("Employee doesn't exist\n")

else:

break

pickle_employee(data,filename)

7 0
3 years ago
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Answer: External

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Therefore, a buyer who asks a friend, checking the internet or visiting a showroom or make other enquiries beyond his personal knowledge in other to make buying decision is making an external search.

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2 years ago
Mathematics and computer science share many concepts, such as recursion.
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The answer is B.

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