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Oracle Database 23ai SQL Associate Sample Questions:

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

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

2. 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) CROSS JOIN
C) EQUI JOIN
D) NATURAL JOIN

3. Which of the following is true about foreign key constraints in SQL?

A) They define a relationship between two tables.
B) They ensure that a column only contains NULL values.
C) They enforce the uniqueness of values in a column.

4. Which command can be used to rename a table in Oracle Database?

A) MODIFY TABLE NAME
B) ALTER TABLE RENAME
C) RENAME
D) RENAME TABLE

5. Which SQL function calculates the number of months between two dates?
Response:

A) DATE_CALC
B) DATE_DIFF
C) MONTHS_BETWEEN
D) TIME_DIFF

Solutions: