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Oracle 1Z1-171 Exam Syllabus Topics:

Section	Objectives
Relational Database Concepts	- Database fundamentals and relational model 1. Entity relationships and normalization basics 2. Tables, rows, columns, and keys
Data Manipulation Language (DML)	- Insert, Update, Delete operations 1. Transaction control (COMMIT, ROLLBACK) 2. Data integrity considerations
Retrieving Data Using SQL	- Joins and Subqueries 1. Correlated and non-correlated subqueries 2. Inner and outer joins - SELECT statements 1. Sorting results with ORDER BY 2. Filtering with WHERE clause 3. Column selection and expressions
Advanced SQL Features	- Aggregations and grouping 1. Aggregate functions 2. GROUP BY and HAVING - Set operators and functions 1. Single-row and group functions 2. UNION, INTERSECT, MINUS
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 (Q42-Q47):

NEW QUESTION # 42
What is the result of the following SQL query?
SELECT COALESCE(NULL, 100, 200) AS result FROM dual;

A. 0
B. 1
C. 2
D. NULL

Answer: C

NEW QUESTION # 43
What does the COMMIT statement do in SQL?

A. Saves all pending changes to the database permanently
B. Discards all pending changes in the transaction
C. Rolls back changes to a previous state
D. Begins a new transaction

Answer: A

NEW QUESTION # 44
Which type of privilege allows a user to perform administrative tasks, such as creating other users?

A. System privilege
B. Table privilege
C. Schema privilege
D. Object privilege

Answer: A

NEW QUESTION # 45
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. Employees who do not have managers
B. Employees who have managers
C. Employees and their managers' IDs
D. All employees and their IDs

Answer: B

NEW QUESTION # 46
What happens when a temporary table is created in Oracle Database?

A. It is permanently stored in the database.
B. It is created for the duration of a user session or transaction.
C. It is stored in external files.
D. It cannot have any constraints.

Answer: B

NEW QUESTION # 47
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