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Oracle 1Z1-171 Exam Syllabus Topics:

Section	Objectives
Topic 1: Relational Database Concepts	- Database fundamentals and relational model 1. Tables, rows, columns, and keys 2. Entity relationships and normalization basics
Topic 2: Data Manipulation Language (DML)	- Insert, Update, Delete operations 1. Data integrity considerations 2. Transaction control (COMMIT, ROLLBACK)
Topic 3: Data Definition Language (DDL)	- Schema objects 1. Tables and constraints 2. Views and indexes
Topic 4: 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
Topic 5: 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

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Oracle Database 23ai SQL Associate Sample Questions (Q37-Q42):

NEW QUESTION # 37
Which function returns the current system date and time in the database session's time zone?

A. CURRENT_TIMESTAMP
B. LOCAL_TIME
C. SYSTEM_TIME
D. SYSDATE

Answer: A

NEW QUESTION # 38
What will the following query do?
DELETE FROM employees
WHERE department_id = 20;

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

Answer: D

NEW QUESTION # 39
What does the following SQL query do?
SELECT *
FROM employees e
JOIN employees m ON e.manager_id = m.employee_id;

A. Lists employees and their corresponding managers
B. Lists employees without departments
C. Lists employees who are managers
D. Lists employees who are not managers

Answer: A

NEW QUESTION # 40
What is a subquery in SQL?

A. A query that combines data from multiple tables
B. A query inside another query
C. A query used to create a table
D. A query used for joining two or more tables

Answer: B

NEW QUESTION # 41
What will the following SQL statement output?
SELECT first_name || ' ' || last_name AS full_name FROM employees;

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

Answer: A

NEW QUESTION # 42
......

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