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Oracle Database 23ai SQL Associate Sample Questions:

1. What happens when the maximum value of a sequence is reached?

A) The sequence starts decrementing values.
B) The sequence stops generating values.
C) The sequence resets to the starting value if the CYCLE option is specified.
D) An error is raised, and the sequence must be recreated.

2. What happens if a DELETE statement is executed without a WHERE clause?

A) Only the first row is deleted.
B) An error is raised.
C) No rows are deleted.
D) All rows in the table are deleted.

3. Which statement can be used to undo changes made in a transaction?

A) ROLLBACK
B) SAVEPOINT
C) MERGE
D) COMMIT

4. Which of the following statements is true about constraints in Oracle Database?

A) Constraints can be added or modified using the ALTER TABLE statement.
B) Constraints can only be added when creating a table.
C) Constraints cannot reference other tables.
D) Constraints are automatically dropped when rows are deleted.

5. What is required for the queries combined by a SET operator to work correctly?

A) Both queries must use the GROUP BY clause.
B) Both queries must include the WHERE clause.
C) The result sets must have the same number of columns and compatible data types.
D) The tables must be joined using a primary key.

Solutions: