Hi,
Thanks, I was able to set up the project and get errors in wrong cases. As I am trying to study the isolation supported, I have 2 questions as follows:
1) In the class jdbcConnection, in the method setTransactionIsolation(level), the implementation allows to set any of the 4 Isolation levels. But, does not the system only support READ_UNCOMMITTED level; or does it support any of the 4 levels?
2) Also, when locking on write, I understand that a specific row being updated by a Transaction is locked right? The lock is not on the predicates right? I am concerned because the book I was reading on Transactions said that all Isolation Levels do write locks on predicates; but from my understanding of the implementation only locks are made on the tuples.
Thanks a lot.
Sincerely,
Irum Godil.
Do you Yahoo!?
Yahoo! Small Business - Try our new resources site!
