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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) Only the first names of employees
D) Concatenated first and last names without spaces

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

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

3. Which command grants a user the ability to query data from a specific table?

A) GRANT SELECT ON table_name TO user_name;
B) ALLOW SELECT ON table_name TO user_name;
C) GRANT ALL ON table_name TO user_name;
D) ENABLE SELECT ON table_name TO user_name;

4. Which of the following best describes a relational database?

A) A flat file system with no defined relationships between data
B) A database where all data is stored as key-value pairs
C) A database that organizes data hierarchically
D) A database that uses a tabular structure with rows and columns to represent relationships between data entities

5. What does the EXISTS operator check in a subquery?

A) If the subquery returns any rows
B) If the subquery returns a specific number of rows
C) If the subquery contains only unique values
D) If the subquery references the outer query

Solutions: