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sveta [45]
3 years ago
5

Why concurrency control is needed in transaction.

Computers and Technology
1 answer:
choli [55]3 years ago
6 0

Explanation:

Concurrency Control in Database Management System is a procedure of managing simultaneous operations without conflicting with each other. It ensures that Database transactions are performed concurrently and accurately to produce correct results without violating data integrity of the respective Database.And The ACID properties, in totality, provide a mechanism to ensure correctness and consistency of a database in a way such that each transaction is a group of operations that acts a single unit, produces consistent results, acts in isolation from other operations and updates that it makes are durably stored.

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Why does a HTML seen to work even when its broken? why does the code sometimes turn pink?
OverLord2011 [107]

the reason HTML seems to work even if it has syntax errors is due to browser having built in ways to parse the code meaning it will still show but most likely look way different then you would want.

the code may turn pink due to syntax errors

5 0
3 years ago
What is the name of the technology that is typically implemented on switches to avoid Ethernet connectivity problems when the wr
Andrew [12]

Answer:  Medium Dependent Interface Crossover (MDIX)

Explanation:

The technology that is typically implemented on switches to avoid Ethernet connectivity problems is Medium Dependent Interface Crossover(MDIX) For switches with Auto (MDIX) the connection is configured automatically and a crossover or straight-through cable can be used to connect two switches. When this MDIX interface is connected it corrects the connectivity speed and the cabling for proper device functionality.

4 0
3 years ago
If Count = 1 and X = 3, what will be displayed when code corresponding to the following pseudocode is run? Do Set Y = Count + X
kirill115 [55]

Answer:

4 5 6

Explanation:

Since there is a do-while loop, you need to check the values for each iteration until the condition (Count <= X) is not satisfied.

First iteration ->  Count = 1 and X = 3, Y = 1 + 3, Write Y -> 4

Second iteration ->  Count = 2 and X = 3, Y = 2 + 3, Write Y -> 5

Third iteration ->  Count = 3 and X = 3, Y = 3 + 3, Write Y -> 6

After the third iteration count is equal to 4 and X is equal to 3. That is why loop ends.

3 0
3 years ago
including how it can be stored and what types of operations we can perform. For example, we can write a program that squares num
ASHA 777 [7]

Answer:

The solution code is written in Python:

  1. def square(num):
  2.    if type(num).__name__ == 'int':
  3.        sq_num = num * num
  4.        return sq_num  
  5.    else:
  6.        return "Invalid input"
  7. print(square(5))
  8. print(square("Test"))

Explanation:

To ensure only certain type of operation can be applied on a input value, we can check the data type of the input value. For example, we define a function and name it as <em>square</em> which take one input number, <em>num </em>(Line 1).

Before the <em>num</em> can be squared, it goes through a validation mechanism in by setting an if condition (Line 2) to check if the data type of the input number is an integer,<em> int.</em> If so, the<em> num </em>will only be squared otherwise it return an error message (Line 6).

We can test our function by passing value of 5 and "Test" string. We will get program output:

25

Invalid input

6 0
3 years ago
What is the maximum number of elements that will be visited by the binary search algorithm when searching a sorted 45-element ar
sergey [27]

The max nukber of elements visited will be 6.

6 0
2 years ago
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