⟩ Explain what is Rollback Segment?
It stores your uncommited temporart data. ex. If you do any insert/update/delete and you won't commit it is written in rollback segment.
It stores your uncommited temporart data. ex. If you do any insert/update/delete and you won't commit it is written in rollback segment.
Explain What is the effect of setting the value "CHOOSE" for OPTIMIZER_GOAL, parameter of the ALTER SESSION Command?
What is RULE-based approach to optimization?
Explain Transaction?
Explain What does COMMIT do?
Explain What is the function of Optimizer?
Explain What are the different approaches used by Optimizer in choosing an execution plan ?
Explain There is a field of type character in the table, but we are storing numeric values like (Roll number) in this field, so if we want to sort the field (in java) according to numbers. How?
Explain When does a Transaction end?
Explain What does ROLLBACK do?
What is COST-based approach to optimization?