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Oracle 1Z0-171 Exam Syllabus Topics:

Section	Objectives
Topic 1: Data Manipulation Language (DML)	- Insert, Update, Delete operations 1. Transaction control (COMMIT, ROLLBACK) 2. Data integrity considerations
Topic 2: Retrieving Data Using SQL	- Joins and Subqueries 1. Inner and outer joins 2. Correlated and non-correlated subqueries - SELECT statements 1. Sorting results with ORDER BY 2. Column selection and expressions 3. Filtering with WHERE clause
Topic 3: Advanced SQL Features	- Aggregations and grouping 1. Aggregate functions 2. GROUP BY and HAVING - Set operators and functions 1. UNION, INTERSECT, MINUS 2. Single-row and group functions
Topic 4: Relational Database Concepts	- Database fundamentals and relational model 1. Entity relationships and normalization basics 2. Tables, rows, columns, and keys
Topic 5: Data Definition Language (DDL)	- Schema objects 1. Views and indexes 2. Tables and constraints

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Oracle Database 23ai SQL Associate Sample Questions (Q59-Q64):

NEW QUESTION # 59
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 all employees and their salaries
D. Return employees with a salary below the average salary

Answer: B

NEW QUESTION # 60
What is the result of the following query?
SELECT employee_id
FROM employees
WHERE EXISTS (SELECT 1 FROM departments WHERE department_id = 10);

A. Employees with salaries greater than 10
B. All employee IDs
C. Employee IDs from departments with no employees
D. Employee IDs from department 10

Answer: B

NEW QUESTION # 61
What does the NEXTVAL pseudocolumn do in SQL?

A. Resets the sequence to its starting value
B. Retrieves the next value in a sequence and increments the sequence
C. Deletes the sequence from the database
D. Retrieves the current value of a sequence without incrementing it

Answer: B

NEW QUESTION # 62
What will the following query do?
DELETE FROM employees
WHERE department_id = 20;

A. Delete all rows in the employees table
B. Delete all rows where department_id is 20
C. Raise an error because DELETE cannot use a WHERE clause
D. Delete the department_id column in the employees table

Answer: B

NEW QUESTION # 63
The column data type is converted to a primary key.

A. CREATE ALIAS
B. CREATE SEQUENCE
C. CREATE INDEX
D. CREATE SYNONYM

Answer: D

NEW QUESTION # 64
......

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