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Oracle 1Z0-171 Exam Syllabus Topics:

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

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Oracle Database 23ai SQL Associate Sample Questions (Q74-Q79):

NEW QUESTION # 74
Which of the following is a valid reason to create a synonym?

A. To improve query performance
B. To automatically generate numeric values for a column
C. To enforce unique constraints on a table
D. To provide simplified and consistent access to an object

Answer: D

NEW QUESTION # 75
Which statement can be used to undo changes made in a transaction?

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

Answer: D

NEW QUESTION # 76
What is a sequence in Oracle Database?

A. A database object that generates a series of unique numeric values
B. A type of index used for sorting rows
C. A predefined set of SQL queries executed in order
D. A list of numbers stored in a table

Answer: A

NEW QUESTION # 77
What will the following SQL query do?
UPDATE employees
SET salary = salary * 1.1
WHERE department_id = 10;

A. Set the salary to 1.1 for employees in department 10
B. Decrease the salary of employees in department 10 by 10%
C. Increase the salary of employees in department 10 by 10%
D. Increase the salary of all employees by 10%

Answer: C

NEW QUESTION # 78
What does the following query return?
SELECT department_id FROM departments
INTERSECT
SELECT department_id FROM employees;

A. All department IDs from the departments table
B. Department IDs that exist only in the employees table
C. Department IDs that exist in both the departments and employees tables
D. All department IDs from the employees table

Answer: C

NEW QUESTION # 79
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