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netineya [11]
1 year ago
11

Write a function, named "wait_die_scheduler" that takes a list of actions, and returns a list of actions according to the follow

ing rules. The actions given to the scheduler will only consist of WRITE and COMMIT actions. (Hence only exclusive locks need be implemented.) Each transaction will end with a COMMIT action. Before examining each action, attempt to perform an action for each of the transactions encountered (ordered by their names). After all the actions have been examined, continue to attempt to perform an action from each transaction until there are no more actions to be done. You will need to add LOCK, UNLOCK, and ROLLBACK actions to the list of actions to be returned, according to the Wait-Die protocol. If releasing more than one lock (for instance after a COMMIT), release them in order by the name of their object. Use the deferred transaction mode (only requesting locks when needed).

Computers and Technology
1 answer:
lidiya [134]1 year ago
4 0

Answer:

See attached picture for complete code.

Explanation:

See attached picture.

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Jane's organization recently experienced a security incident that occurred when malware set to trigger on the chief executive of
inn [45]

Answer:

The answer is viruses

Explanation:

Because it is a harmful software hidden inside another  and usually performs a harmful action, such as destroying data.

4 0
2 years ago
You need to design a data storage scheme for Hayseed Heaven library data system. There are several hundred thousand large data r
Alekssandra [29.7K]

Answer:

Make use of hash tables

Explanation:

The appropriate thing to use for this should be a hash table.

A Hash Table can be described as a data structure which stores data in an associative manner. In a hash table, data is stored in an array format, where each data value has its own unique index value. Access of data becomes very fast if we know the index of the desired data. So we can perform Hashing on ISBN Number since its unique and based on the Hash Function w ecan store the Information record.

There is no requirement for printing the file in order - HashTables dont store the data in order of insertions, so no problems with that

It becomes a data structure in which insertion and search operations are very fast irrespective of the size of the data. So Querying books details can be fast and searching will take less time.

It can also be pointed out that it wont be too expensive for Hardware implemtation as HashTables stores data based on Hash Functions and memory consumption is also optimal which reduces memory wastages.

7 0
2 years ago
A communication pattern in which the parties slowly reduce their dependence on one another, withdraw, and become less invested i
zepelin [54]

Answer:

The correct answer to the following question is option A. an avoidance spiral.

Explanation:

An avoidance spiral is a spiral in which parties avoid the conflicts at all cost in which leads to reducing the influence, dependence, etc. This spiral can also be destructive.

In other words, it is the only spiral in parties slowly reduces their dependence and the influence on the one and another.

7 0
2 years ago
Design a GUI program to find the weighted average of four test scores. The four test scores and their respective weights are giv
Alexus [3.1K]

<u>Answer:</u>

I am writing <em>partial code in</em> <em>c++ to calculate weighted average</em>. The weighted average should be calculated based on multiplying the test score and its <em>respective weight and finally add all the test score.</em>

<u>Explanation:</u>

<em>int arrtestscore[100];</em>

<em>int arrweight[100];</em>

<em>int n;</em>

<em>double weightedavg;</em>

<em>cout<<”Enter the number of test score for which weighted average needs to be calculated”;</em>

<em>cin>>n;</em>

<em>for(int x = 0; x <n;x++)</em>

<em>{</em>

<em> cout<<”Enter test score :” + (x+1) ;</em>

<em> cin>>arrtestscore[x];</em>

<em> count<<”Enter the respective weight:”;</em>

<em> cin>>arrweight[x];</em>

<em>}</em>

<em>for (int i=0; i<n;i++)</em>

<em>{</em>

<em> weightedavg = weightedavg + (arrtestscore[i] * arrweight[i])</em>

<em>}</em>

<em>cout<<”weighted average = “ <<weightedavg; </em>

3 0
1 year ago
Define a new object in variable painter that has properties "name" storing "Vincent van Gogh"; "artworks" storing "The Starry Ni
trapecia [35]

Answer:

painter = {'name' : "Vincent van Gogh", 'artworks': ["The Starry Night","Irises","The Potato Eaters"],'bornDate': "March 30, 1853", 'eyeColor': "July 29, 1890", 'diedDate': "July 29, 1890"} #this is a code which holds the questions defined value in a painter variable.

Explanation:

  • The above question wants to declare a variable that is in the form of a key and value pair.
  • The above question states to define name, artworks,eyeColor, and dieddate as a key and the other is defined as a value.
  • when a user wants to access the whole dictionary then he can do with the help of the painter variable.
  • But when he wants to access the value of any particular key, then he can do it with the help of the key name as "painter[keyname]".

6 0
2 years ago
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