How to Prepare For Oracle 1Z0-171 Certification Exam?

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Oracle 1Z0-171 Exam Syllabus Topics:

Section	Objectives
Retrieving Data Using SQL	- Joins and Subqueries 1. Correlated and non-correlated subqueries 2. Inner and outer joins - SELECT statements 1. Sorting results with ORDER BY 2. Column selection and expressions 3. Filtering with WHERE clause
Relational Database Concepts	- Database fundamentals and relational model 1. Tables, rows, columns, and keys 2. Entity relationships and normalization basics
Data Definition Language (DDL)	- Schema objects 1. Tables and constraints 2. Views and indexes
Data Manipulation Language (DML)	- Insert, Update, Delete operations 1. Transaction control (COMMIT, ROLLBACK) 2. Data integrity considerations
Advanced SQL Features	- Set operators and functions 1. Single-row and group functions 2. UNION, INTERSECT, MINUS - Aggregations and grouping 1. GROUP BY and HAVING 2. Aggregate functions

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Oracle Database 23ai SQL Associate Practice Vce - 1Z0-171 Training Material & Oracle Database 23ai SQL Associate Study Guide

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Oracle Database 23ai SQL Associate Sample Questions (Q24-Q29):

NEW QUESTION # 24
Which type of join returns all rows from the left table, even if there are no matches in the right table?

A. FULL OUTER JOIN
B. RIGHT OUTER JOIN
C. LEFT OUTER JOIN
D. INNER JOIN

Answer: C

NEW QUESTION # 25
Which of the following SET operators combines results from two queries and removes duplicates?

A. UNION ALL
B. INTERSECT
C. MINUS
D. UNION

Answer: D

NEW QUESTION # 26
What is a role in Oracle Database?

A. A user-defined function
B. A set of privileges that can be granted to users or other roles
C. A database object used to enforce constraints
D. A predefined SQL statement stored in the database

Answer: B

NEW QUESTION # 27
Which type of join includes rows that do not have matching values in the joined table?

A. CROSS JOIN
B. INNER JOIN
C. OUTER JOIN
D. SELF JOIN

Answer: C

NEW QUESTION # 28
What does the following query return?
SELECT employee_id
FROM employees
WHERE department_id IN (SELECT department_id FROM departments WHERE location_id = 1000);

A. Departments located in location ID 1000
B. Employees with no department
C. Employees working in location ID 1000
D. Employees with salaries greater than 1000

Answer: C

NEW QUESTION # 29
......

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