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melisa1 [442]
2 years ago
9

Describe the basic features of the relational data model and discuss their importance to the end user and the designer. Describe

the Big Data phenomenon.
Computers and Technology
1 answer:
Mandarinka [93]2 years ago
6 0

Answer:

The answer to this question can be described as follows:

Explanation:

Relational data model:

The use of data tables to organize sets of entities into relationships requires a relational data model. this model work on the assumption, which is a primary key or code, that is included in each table configuration. The symbol for "relational" data links and information is used by other tables.

Model Design:

This model is used for database management, it consists of structure and language consistency. It is design in 1969.

Importance of data model:  

This provides a common standard for processing the potentially sound data in machines, that was usable on almost any one device.  

Big Data:

It moves to locate new and innovative ways to handle large volumes of authentication tokens and to gather business insights when offering high efficiency and usability at an affordable cost at the same time.

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What are the arguments for writing efficient programs even though hardware is relatively inexpensive?
Ainat [17]

Answer: Even though the hardware is inexpensive the writing of program is not efficient through this method as proper development of program is necessary for the clear execution due to factors like:-

  • The facility of writing program even the cost of hardware is less but it is not a free facility.
  • It also has a slower processing for the execution of the program
  • The construction of the efficient program is necessary for the compilation and execution of it rather than poorly constructed program is worthless and inefficient in working.

7 0
2 years ago
Which of the following code is correct? I: print("Programming is fun") print("Python") print("Computer Science") II: print("Prog
vfiekz [6]

Answer:

None of the options is correct.

Explanation:

One of the simplest statements that you can write in Python is a print statement, which causes a message to be displayed on the screen. For example, the following statement causes the message Python programming is fun! to be displayed:

print 'Python programming is fun!'

Notice that after the word print, the Python programming is fun! was written inside a set of single-quote marks. The quote marks are necessary, but they will not be displayed. They simply mark the beginning and the end of the text that we wish to display.

Here is an example of how you would type this print statement at the interpreter’s

prompt:

>>> print 'Python programming is fun!'

After typing the statement you press the Enter key and the Python interpreter executes the statement, as shown here:

>>> print 'Python programming is fun!'

Python programming is fun!

>>>

Thus, the correct way to write the codes in the question is:

print 'Programming is fun'

print 'Python'

print 'Computer Science'

3 0
2 years ago
A(n) key is the set of steps used to convert an unencrypted message into an encrypted sequence of bits that represent the messag
a_sh-v [17]

Answer:

Algorithm

Explanation:

Algorithm is a set of instructions designed to perform a specific task, an independent sequence of actions to be perform to solve a problem and instruction for performing a computation.

Algorithm is A(n) key set of steps used to convert an unencrypted message into an encrypted sequence of bits that represent the message; it sometimes refers to the programs that enable the cryptographic processes.

5 0
2 years ago
Read 2 more answers
Write pseudocode for a program which will ask a user to enter two numbers a and b. It then asks what operation is to be performe
sleet_krkn [62]

get int input for a

get int input for b

get string input for operator

if a is not int or b is not int throw exception and print error

if operator is not * / // or % throw exception and print error

if operator is * do multiplication of a and b and make answer c

else if operator is / do division of a and b and make answer c

else if operator is // do floor division of a and b and make answer c

else if operator is % do floor modulo of a and b and make answer c

print c

5 0
2 years ago
Object-oriented development could potentially reduce the time and cost of writing software because: Group of answer choices a) i
spayn [35]

Answer:

b) objects are resuable

Explanation:

In OOP there's code reuse where a method or any other body of code is defined once and called or reused severally.

3 0
2 years ago
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