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Oracle 1Z0-171 Exam Syllabus Topics:

Section	Objectives
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. Filtering with WHERE clause 3. Column selection and expressions
Data Definition Language (DDL)	- Schema objects 1. Views and indexes 2. Tables and constraints
Relational Database Concepts	- Database fundamentals and relational model 1. Tables, rows, columns, and keys 2. Entity relationships and normalization basics
Advanced SQL Features	- Aggregations and grouping 1. GROUP BY and HAVING 2. Aggregate functions - Set operators and functions 1. Single-row and group functions 2. UNION, INTERSECT, MINUS
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 (Q70-Q75):

NEW QUESTION # 70
What will the following query result in?
SELECT e.employee_id, e.manager_id
FROM employees e
WHERE e.manager_id IS NOT NULL;

A. All employees and their IDs
B. Employees who do not have managers
C. Employees and their managers' IDs
D. Employees who have managers

Answer: D

NEW QUESTION # 71
How can a synonym benefit database design?

A. It provides a consistent reference to database objects, even if their underlying names change.
B. It improves query execution time.
C. It allows the renaming of columns in a table.
D. It enforces constraints on table columns.

Answer: A

NEW QUESTION # 72
What is a subquery in SQL?

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

Answer: A

NEW QUESTION # 73
Which SQL function calculates the number of months between two dates?
Response:

A. DATE_DIFF
B. DATE_CALC
C. TIME_DIFF
D. MONTHS_BETWEEN

Answer: D

NEW QUESTION # 74
Which SQL statement is used to insert a new row into a table?

A. UPDATE
B. INSERT
C. SELECT
D. ALTER

Answer: B

NEW QUESTION # 75
......

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