Oracle Transaction Control Statements: Beginner-Level Quiz

The ______ lock allows concurrent transactions to access the same row as long as they require the use of different fields within that row.

A(n) ______ lock exists when concurrent transactions are granted Read access on the basis of a common lock.

When the recovery procedure uses _____, the database is immediately updated by transaction operations during the transaction's execution, even before the transaction reaches its commit point.

According to the ANSI SQL standard, when does a transaction begin?

What is the use of the ROLLBACK command in oracle?

A transaction can include multiple SQL statements. True or False?

Although the ______ locking approach improves the availability of data, its management requires high overhead.

In a(n) ______ backup of the database, only the last modifications to the database are copied.

All transactions are controlled and executed by the DBMS (subject to some limitations) to guarantee database _____.

A ______ database state is one in which all data integrity constraints are satisfied.

If we are inserting / updating / deleting data to/from a table then we are performing a transaction on a table. True or False?

All lock information is managed by a ______, which is responsible for assigning and policing the locks used by the transactions.

A DBMS uses a transaction ______ to keep track of all transactions that update the database

Once we execute the commit statement, we cannot revert back the changes. True or False?

The rule of transaction tells that either all the statements in the transaction should be executed (all are committed) successfully or none of those statements to be executed (i.e. all are canceled or rollbacked). Is this statement true?

If several concurrent transactions are executed over the same data set and the second transaction updates the database before the first transaction is finished, the _____ property is violated and the database is no longer consistent.

______ means that the data used during the execution of a transaction cannot be used by a second transaction until the first one is completed.

Deadlocks are possible only when one of the transactions wants to obtain a(n) ______ lock on a data item.

The three basic techniques to control deadlocks are: deadlock ______, deadlock detection, and deadlock avoidance.

______ ensures that once transaction changes are done, they cannot be undone or lost, even in the event of a system failure.