Data Access Question:

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Explain When does a Transaction end?

Oracle Data Access Interview Question
Oracle Data Access Interview Question

Answer:

Commit, Rollback, DCL command like grant revoke.When exit from oracle (implicite commit happened), When database abnormally closed then an implicit rollback happened. When user invokes an DDl command

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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 What does ROLLBACK do?