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Oracle Database 23ai SQL Associate Sample Questions:

1. Which of the following ensures that a relational database enforces data integrity?

A) Redundant data storage
B) Indexes on all columns
C) Constraints such as primary keys, foreign keys, and unique constraints
D) Hierarchical data organization

2. What does a Cartesian product in SQL result from?

A) A NATURAL JOIN without specifying join conditions
B) An OUTER JOIN with NULL values
C) An INNER JOIN without specifying join conditions

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

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

4. Which of the following SQL commands retrieves data from a relational database?

A) SELECT
B) UPDATE
C) DELETE
D) INSERT

5. The column data type is converted to a primary key.

A) CREATE INDEX
B) CREATE SYNONYM
C) CREATE ALIAS
D) CREATE SEQUENCE

Solutions: