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3 years ago

Mr. Stevens is the principal of a high school. Why might he want to export data from a database of students’ exam scores?

2 answers:

7 0

I am not sure but I think that it is either the First option or the Third option but you would probably need more information.

Amiraneli [1.4K]3 years ago

4 0

Answer: it’s the third answer

Explanation:

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Define the following term. data, database, DBMS, database system, data- base catalog, program-data independence, user wen', DBA,

wolverine [178]

Answer:

data - Any form of value in a column of a table in a relational database.

DBMS - Short for Database management system, which is a software that can be used to create, manipulate and view databases, e.g. MS SQL Server.

database system - Same as DBMS.

database catalog - Place where the metadata of a Database, its tables, users etc. exists e.g. date created, size, number of columns etc. Also known as Data Dictionary.

program-data independence - Program-data independence refers to the capability of leaving data intact and accessible regardless of modifications to the database that contains the data.

DBA - Short for Database Administrator, person responsible for maintaining the database. Its main responsibility is to keep the data clean and safe i.e. data doesn't contain wrong or invalid data, and is safe from viruses and is backed up.

end user - Anyone who is not directly interacting with a database, but through some software like website and mobile application.

persisten object - An object of a class in a program, that interacts with the underlying database and is responsible for manipulating the database connected to.

transaction-processing system - A transaction process system is part of a software, responsible for making sure critical business transactions, like crediting or debiting money, either goes through cleanly or doesn't at all.

CRUD are the four main types of operations one can do in a database environment. It stands for creating, reading, deleting and updating.

Explanation:

4 0

3 years ago

Which of the following application delivery methods requires Internet access?

morpeh [17]

Answer:Cloud hosted

Explanation:

3 0

3 years ago

Write a function called 'game_of_eights()' that accepts a list of numbers as an argument and then returns 'True' if two consecut

MrRa [10]

Answer:

In Python:

def main():

n = int(input("List items: "))

mylist = []

for i in range(n):

listitem = input(", ")

if listitem.isdecimal() == True:

mylist.append(int(listitem))

else:

mylist.append(listitem)

print(game_of_eights(mylist))

def game_of_eights(mylist):

retVal = "False"

intOnly = True

for i in range(len(mylist)):

if isinstance(mylist[i],int) == False:

intOnly=False

retVal = "Please, enter only integers"

if(intOnly == True):

for i in range(len(mylist)-1):

if mylist[i] == 8 and mylist[i+1]==8:

retVal = "True"

break

return retVal

if __name__ == "__main__":

main()

Explanation:

The main begins here

def main():

This gets the number of list items from the user

n = int(input("List items: "))

This declares an empty list

mylist = []

This iterates through the number of list items

for i in range(n):

This gets input for each list item, separated by comma

listitem = input(", ")

Checks for string and integer input before inserting item into the list

if listitem.isdecimal() == True:

mylist.append(int(listitem))

else:

mylist.append(listitem)

This calls the game_of_eights function

print(game_of_eights(mylist))

The game_of_eights function begins here

def game_of_eights(mylist):

This initializes the return value to false

retVal = "False"

This initializes a boolean variable to true

intOnly = True

This following iteration checks if the list contains integers only

for i in range(len(mylist)):

If no, the boolean variable is set to false and the return value is set to "integer only"

if isinstance(mylist[i],int) == False:

intOnly=False

retVal = "Please, enter only integers"

This is executed if the integer contains only integers

if(intOnly == True):

Iterate through the list

for i in range(len(mylist)-1):

If consecutive 8's is found, update the return variable to True

if mylist[i] == 8 and mylist[i+1]==8:

retVal = "True"

break

This returns either True, False or Integer only

return retVal

This calls the main method

if __name__ == "__main__":

main()

7 0

3 years ago

computer hardware without software is useless while computer software without hardware is meaningless. explain what do you under

Rainbow [258]

Answer:

That the software is useless

Explanation:

6 0

3 years ago

What are parts of the prewriting process

Rainbow [258]

The prewriting process should include brainstorming a topic, deciding on which topic on which to write, research of a topic, organizing the research into a comprehensive whole. Check out an APA style textbook, should be available at the library, and it should have more results in the prewriting process. Of course, the writing process itself depends on the individual and his or her cognitive process on writing.

6 0

3 years ago

Read 2 more answers