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Oracle Database 23ai SQL Associate Sample Questions:

1. Which command creates a new role in Oracle Database?

A) CREATE NEW ROLE role_name;
B) CREATE ROLE role_name;
C) ADD ROLE role_name;

2. How can you ensure that data is sorted in descending order in a SQL query?

A) Use the ASC keyword
B) Use the ORDER keyword
C) Use the DESC keyword
D) Use the DISTINCT keyword

3. What is the primary purpose of an index in SQL?

A) To ensure uniqueness of values in a column
B) To enforce data integrity constraints
C) To improve the performance of data retrieval queries
D) To store metadata about a table

4. What does the following query return?
SELECT ROUND(123.456, 1) AS rounded_value FROM dual;

A) 123.5
B) 123.4
C) 124
D) 123.45

5. Which SQL clause can be used in Oracle to limit the number of rows returned?

A) FETCH FIRST n ROWS ONLY
B) GROUP BY
C) DISTINCT
D) WHERE

Solutions: