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Oracle 1Z0-171 Exam Syllabus Topics:

Section	Objectives
Topic 1: Data Definition Language (DDL)	- Schema objects 1. Tables and constraints 2. Views and indexes
Topic 2: Data Manipulation Language (DML)	- Insert, Update, Delete operations 1. Data integrity considerations 2. Transaction control (COMMIT, ROLLBACK)
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. Tables, rows, columns, and keys 2. Entity relationships and normalization basics
Topic 5: Retrieving Data Using SQL	- SELECT statements 1. Sorting results with ORDER BY 2. Column selection and expressions 3. Filtering with WHERE clause - Joins and Subqueries 1. Correlated and non-correlated subqueries 2. Inner and outer joins

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Oracle Database 23ai SQL Associate Sample Questions (Q73-Q78):

NEW QUESTION # 73
How does SQL handle NULL values in arithmetic expressions?

A. Treats them as the largest possible number
B. Treats them as zero
C. Produces an error
D. Produces a NULL result

Answer: D

NEW QUESTION # 74
What will the following SQL query return?
SELECT TRUNC(15.678, 2) AS truncated_value FROM dual;

A. 15.6
B. 15.67
C. 15.678
D. 15.68

Answer: B

NEW QUESTION # 75
What is required for the queries combined by a SET operator to work correctly?

A. Both queries must use the GROUP BY clause.
B. The tables must be joined using a primary key.
C. The result sets must have the same number of columns and compatible data types.
D. Both queries must include the WHERE clause.

Answer: C

NEW QUESTION # 76
What does the following query return?
SELECT department_id FROM departments
INTERSECT
SELECT department_id FROM employees;

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

Answer: D

NEW QUESTION # 77
What does a Cartesian product in SQL result from?

A. A NATURAL JOIN without specifying join conditions
B. An OUTER JOIN with NULL values
C. An INNER JOIN without specifying join conditions

Answer: C

NEW QUESTION # 78
......

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