. A binary search has a right subtree but no left subtree. What noes contains that least element in the tree

Examine the efficiency the various recovery algorithms used in deadlock handling

sineoko [7]

Solution:

The process of transaction can guarantee the reliability of business applications. Locking resources is widely used in distributed transaction management (e.g; two phase commit, 2PC) to keep the system consistent. The locking mechanism, however, potentially results in various deadlocks. In service oriented architecture, the deadlock problem becomes even worse because multiple transactions try to lock shared resources in the unexpectable way due to the more randomicity of transaction requests, which has not been solved by existing research results. In this paper, we investigate how to prevent local deadlocks, caused by the resource competition among multiple sub-transactions of a gl obal transaction, and global deadlocks from the competition among different global transactions. We propose a replication based approach to avoid the local deadlocks, and a timestamp based approach to significantly mitigate the global deadlocks. A general algorithm is designed for both local and global deadlock prevention. The experimental results demonstrate the effectiveness and efficiency of our deadlock prevention approach. Further, it is also proved that our approach provides higher system performance than traditional resource allocation schemes.

This is the required answer.

4 0

3 years ago

Which type of game requires you to read people’s expressions to anticipate their moves?

Irina-Kira [14]

Answer:

Chess-type games

Explanation:

5 0

2 years ago

PLEASE HELP there are TWO ANSWERS

pickupchik [31]

Answer:

Pero un campo cuyo tipo de datos es Número solo puede almacenar datos numéricos. ... Por ejemplo, los valores que se almacenan en un campo Texto solo pueden contener ... Para más información, haga clic en los tipos de datos siguientes. ... Controla la conversión de frases en las versiones asiáticas de Windows.

5 0

3 years ago

Files and folders in UNIX can be removed using the

wel

Files and folders in UNIX can be removed using the rm command.

The answer is B. rm command

Hope this helps :)

3 0

2 years ago

Write a program that would determine the day number in a non-leap year. For example, in a non-leap year, the day number for Dec

SOVA2 [1]

Answer:

In Python:

months = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]

daymonths = [31,28,31,30,31,30,31,31,30,31,30,31]

day = int(input("Day: "))

month = input("Month: ")

ind = months.index(month)

numday = 0

for i in range(ind):

numday+=daymonths[i]

numday+=day

print(numday)

Explanation:

This initializes the months to a list

months = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]

This initializes the corresponding days of each month to a list

daymonths = [31,28,31,30,31,30,31,31,30,31,30,31]

This gets the day from the user

day = int(input("Day: "))

This gets the month from the user

month = input("Month: ")

This gets the index of the month entered by the user

ind = months.index(month)

This initializes the sum of days to 0

numday = 0

This adds up the days of the months before the month entered by the user

for i in range(ind):

numday+=daymonths[i]

This adds the day number to the sum of the months

numday+=day

This prints the required number of days

print(numday)

Note that: Error checking is not done in this program

7 0

2 years ago