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Oracle Database 23ai SQL Associate Sample Questions:

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

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

2. What is the relationship between SQL and a relational database?

A) SQL is a standard query language used to interact with relational databases
B) SQL is a file system used to store relational database data.
C) SQL is a scripting language used for file manipulation.
D) SQL is used to create flat file databases.

3. What type of join does the following query perform?
SELECT *
FROM employees e, departments d
WHERE e.department_id = d.department_id;

A) OUTER JOIN
B) EQUI JOIN
C) NATURAL JOIN
D) CROSS JOIN

4. Which data dictionary view lists all indexes created by the current user?

A) ALL_INDEXES
B) DBA_INDEXES
C) USER_INDEXES
D) INDEX_LIST

5. How does SQL handle NULL values in arithmetic expressions?

A) Produces a NULL result
B) Treats them as the largest possible number
C) Treats them as zero
D) Produces an error

Solutions: