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Oracle 1Z1-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

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 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

2. How can a synonym benefit database design?

A) It provides a consistent reference to database objects, even if their underlying names change.
B) It improves query execution time.
C) It enforces constraints on table columns.
D) It allows the renaming of columns in a table.

3. Which type of subquery returns exactly one value?

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

4. What type of join does the following query perform?
SELECT *
FROM employees e, departments d
WHERE e.department_id = d.department_id;

A) CROSS JOIN
B) EQUI JOIN
C) NATURAL JOIN
D) OUTER JOIN

5. What will the following SQL statement output?
SELECT first_name || ' ' || last_name AS full_name FROM employees;

A) Only the first names of employees
B) Concatenated first and last names with spaces in between
C) Concatenated first and last names without spaces
D) A syntax error

Solutions: