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Oracle Database 23ai SQL Associate Sample Questions:

1. What does the COMMIT statement do in SQL?

A) Begins a new transaction
B) Saves all pending changes to the database permanently
C) Rolls back changes to a previous state
D) Discards all pending changes in the transaction

2. What will the following SQL query do?
UPDATE employees
SET salary = salary * 1.1
WHERE department_id = 10;

A) Increase the salary of employees in department 10 by 10%
B) Set the salary to 1.1 for employees in department 10
C) Decrease the salary of employees in department 10 by 10%
D) Increase the salary of all employees by 10%

3. Which command would drop an index from a table?

A) DROP INDEX
B) TRUNCATE INDEX
C) REMOVE INDEX
D) DELETE INDEX

4. Which data dictionary view provides information about all the columns in tables accessible to the current user?

A) ALL of the above
B) DBA_TAB_COLUMNS
C) USER_COLUMNS
D) ALL_TAB_COLUMNS

5. Which data dictionary view provides information about all tables accessible to the current user?

A) SESSION_TABLES
B) DBA_TABLES
C) USER_TABLES
D) ALL_TABLES

Solutions: