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Oracle Database 23ai SQL Associate Sample Questions:

1. What will the following SQL statement output?
SELECT first_name || ' ' || last_name AS full_name FROM employees;

A) Concatenated first and last names with spaces in between
B) A syntax error
C) Concatenated first and last names without spaces
D) Only the first names of employees

2. How is the LOCALTIMESTAMP function different from CURRENT_TIMESTAMP?

A) LOCALTIMESTAMP omits time zone information, while CURRENT_TIMESTAMP includes it.
B) Both functions are identical in output.
C) LOCALTIMESTAMP does not include fractional seconds, while CURRENT_TIMESTAMP does.
D) LOCALTIMESTAMP returns only the date, while CURRENT_TIMESTAMP returns the date and time.

3. Which type of INSERT statement allows inserting rows into multiple tables using a single SELECT query?

A) Insert rows into a single table based on values in other tables
B) Insert rows into multiple tables without conditions
C) Insert rows into a table only when a condition is met
D) Insert rows into multiple tables simultaneously

4. What does the COMMIT statement do in SQL?

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

5. Which command revokes a user's privilege to update a table?

A) REVOKE UPDATE ON table_name FROM user_name;
B) REMOVE UPDATE ON table_name FROM user_name;
C) DENY UPDATE ON table_name FROM user_name;
D) DELETE UPDATE ON table_name FROM user_name;

Solutions: