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Oracle 1Z1-171 Exam Syllabus Topics:

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

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Oracle Database 23ai SQL Associate Sample Questions (Q109-Q114):

NEW QUESTION # 109
Which SQL keyword is used to define a substitution variable in a SQL statement?

A. SET
B. SUBSTITUTION
C. DEFINE
D. VAR

Answer: C

NEW QUESTION # 110
What will the following query do?
SELECT employee_id, salary
FROM employees
WHERE salary > (SELECT AVG(salary) FROM employees);

A. Return employees with a salary equal to the average salary
B. Return employees with a salary above the average salary
C. Return employees with a salary below the average salary
D. Return all employees and their salaries

Answer: B

NEW QUESTION # 111
What does the UNION ALL operation do when selecting matching columns from different tables?
SELECT employee_id, salary FROM employees
UNION ALL
SELECT employee_id, bonus FROM bonuses;

A. Combines the salaries and bonuses for employees, removing duplicates
B. Returns only employees with duplicate employee IDs in both tables
C. Combines all employee IDs, salaries, and bonuses, including duplicates
D. Returns only the employees with salaries and bonuses

Answer: C

NEW QUESTION # 112
What is the default order of evaluation when multiple SET operators are used in a query?

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

Answer: B

NEW QUESTION # 113
What is the purpose of a correlated subquery?

A. A subquery that can be used only with aggregate functions
B. A subquery that combines data from multiple tables
C. A subquery that references columns from the outer query
D. A subquery that depends on the result of another subquery

Answer: C

NEW QUESTION # 114
......

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