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Oracle 1Z1-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

Question 1

What does the following SQL statement do?
CREATE TABLE employees (
employee_id NUMBER PRIMARY KEY,
first_name VARCHAR2(50),
hire_date DATE NOT NULL
);

A. Creates a temporary table
B. Creates a table with a primary key and a NOT NULL constraint
C. Creates a table with no constraints
D. Creates a table with only VARCHAR2 and DATE columns

Question 2

What does the following query return?
SELECT ROUND(123.456, 1) AS rounded_value FROM dual;

A. 123.4
B. 124
C. 123.45
D. 123.5

Question 3

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

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

Question 4

Which type of subquery returns exactly one value?

A. Multiple-row subquery
B. Inline view
C. Correlated subquery
D. Scalar subquery

Question 5

Which statement can be used to undo changes made in a transaction?

A. ROLLBACK
B. SAVEPOINT
C. COMMIT
D. MERGE

Solutions: