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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

Question 1

What will the following SQL query return?
SELECT TRUNC(15.678, 2) AS truncated_value FROM dual;

A. 15.68
B. 15.678
C. 15.67
D. 15.6

Question 2

What does the following SQL statement do?
ALTER TABLE employees DROP COLUMN salary;

A. Deletes the employees table
B. Drops the salary column from the employees table
C. Sets the salary column to NULL for all rows
D. Removes duplicate rows from the employees table

Question 3

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

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

Question 4

Which command is used to add a new column to an existing table?

A. ALTER TABLE
B. ADD COLUMN
C. ALTER COLUMN
D. MODIFY COLUMN

Question 5

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

Solutions: