Interested to Buy Any Domain ? << Click Here >> for more details...
what is meant by Transaction Isolation Levels?
- 2 Answers
- 8084 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / shraddha
Connection.setTransactionIsolation (level)
TRANSACTION_READ_UNCOMMITTED Allows dirty reads, non-
repeatable reads, and phantom reads to occur.
TRANSACTION_READ_COMMITTED Ensures only committed data
can be read.
TRANSACTION_REPEATABLE_READ Is close to
being "serializable," however, "phantom" reads are possible.
TRANSACTION_SERIALIZABLE Dirty reads, non-repeatable
reads, and phantom reads are prevented. Serializable.
A "phantom" read occurs when one transaction reads all rows
that satisfy a WHERE condition, and a second transaction
inserts a row that satisfies that WHERE condition, the
first transaction then rereads for the same condition,
retrieving the additional "phantom" row in the second read.
In addition, JDBC defines an additional constant,
TRANSACTION_NONE, which is used to indicate that the driver
does not support transactions.
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / arghya
To avoid potential conflicts that can arise when two transaction are operating on a database at the same time, we use some transaction isolation level using conn.setTransactionIsolation().
| Is This Answer Correct ? | 0 Yes | 1 No |
Why is a constructor needed in a servlet even if we use the init method?
how many jsp scripting elements are there and what are those?
What is the difference between Difference between doGet() and doPost()?
What is difference between ServletResponse sendRedirect() and RequestDispatcher forward() method?
Why are servlets used?
What is the role of the webserver?
What are the methods in HttpSession and their use?
What do you mean by servlet context?
What is the workflow of a servlet?
How do we translate jsp?
Can you create a deadlock condition on a servlet?
What is servlet attributes and their scope?
Core Java 
