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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. Which component of an ERD (Entity-Relationship Diagram) represents the attributes of an entity?

A) Diamonds
B) Arrows
C) Rectangles
D) Ovals

2. What is a subquery in SQL?

A) A query used for joining two or more tables
B) A query that combines data from multiple tables
C) A query inside another query
D) A query used to create a table

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

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

4. What does the following query return?
SELECT department_id FROM departments
INTERSECT
SELECT department_id FROM employees;

A) All department IDs from the departments table
B) All department IDs from the employees table
C) Department IDs that exist only in the employees table
D) Department IDs that exist in both the departments and employees tables

5. What does the NEXTVAL pseudocolumn do in SQL?

A) Retrieves the next value in a sequence and increments the sequence
B) Resets the sequence to its starting value
C) Retrieves the current value of a sequence without incrementing it
D) Deletes the sequence from the database

Solutions: