Computers and Technology, 29.06.2021 21:50 Shadowhawk681
A database has two tables Rand S with 100 tuples each. Exactly two transactions, 11 and T2, execute concurrently on the database. T1 inserts a tuple in R and after some time decides to abort. T2 computes the difference: SELECT count(*) from R - SELECT count(*) from s and inserts as many tuples in S. After the transactions complete, R has 100 tuples and S has 101 tuples. Which of the following is possible?
a. The transactions executed in the REPEATABLE READ isolation level.
b. The transactions executed in the READ UNCOMMITTED isolation level.
C. The transactions executed in the READ COMMITTED isolation level.
d. This outcome is not possible in any of these isolation levels.
Answers: 3
Other questions on the subject: Computers and Technology
Computers and Technology, 22.06.2019 06:30, westjayson69
Requirement types discussed during software development include functional and color scheme nonfunctional and code style constraint and nonfunctional fashionable and functional.
Answers: 2
Computers and Technology, 23.06.2019 06:30, eddsworldfrantic
You have a small company and want to keep your costs low, but it is important your employees share data. which network would provide you with the most economical solution?
Answers: 1
Computers and Technology, 24.06.2019 17:50, yssbammy
Which of the following best describe how the depth-limited search works. a normal depth-first search is performed but the number of ply/depths is limited. a normal breadth-first search is performed but the number of ply/depths is limited. a normal breadth-first search is performed but values above a specific value will be ignored. a normal depth-first search is performed but values above a specific value will be ignored.
Answers: 1
You know the right answer?
A database has two tables Rand S with 100 tuples each. Exactly two transactions, 11 and T2, execute...
Questions in other subjects:
Social Studies, 28.10.2019 23:31
Mathematics, 28.10.2019 23:31
