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Oracle 1Z1-171 Exam Syllabus Topics:

Section	Objectives
Using DDL Statements	- Create and manage constraints - Create and manage views - Create and manage tables - Create and manage sequences - Create and manage indexes
Using SELECT Statements	- Execute a basic SELECT statement - Use the FETCH clause to limit rows returned - Use the ORDER BY clause to sort rows - Use the WHERE clause to restrict rows
Using DML Statements	- Delete rows from a table - Update rows in a table - Insert rows into a table - Use the MERGE statement - Control transactions
Using Set Operators	- Use UNION, UNION ALL, INTERSECT, and MINUS operators
Controlling User Access	- Grant and revoke privileges - Create and manage roles - Differentiate system privileges from object privileges
Using Joins	- Use self-joins - Use outer joins (LEFT, RIGHT, FULL) - Use equijoins and non-equijoins - Use cross joins
Using Subqueries	- Use single-row subqueries - Use multiple-row subqueries - Use correlated subqueries
Using SQL Functions	- Use conversion functions - Use character, number, and date functions in SELECT statements

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Oracle Database 23ai SQL Associate Sample Questions (Q19-Q24):

NEW QUESTION # 19
What is the purpose of the MERGE statement in SQL?

A. To update existing rows or insert new rows in a target table
B. To combine the results of two queries
C. To join two tables into one
D. To delete duplicate rows from a table

Answer: A

NEW QUESTION # 20
Which Oracle SQL function returns the current date and time, including time zone information?

A. CURRENT_TIMESTAMP
B. CURRENT_DATE
C. NOW
D. SYSDATE

Answer: A

NEW QUESTION # 21
In a relational database, what is a foreign key?

A. A unique identifier for a record in a table
B. A key that is used to establish a relationship between two tables
C. A temporary key generated during query execution
D. A key used to sort data in a specific order

Answer: B

NEW QUESTION # 22
What will the following SQL query return?
SELECT TRUNC(15.678, 2) AS truncated_value FROM dual;

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

Answer: D

NEW QUESTION # 23
How are NULL values treated in relational databases?

A. NULL values are not allowed in relational databases.
B. NULL values represent missing or unknown data.
C. NULL values are treated as empty strings.
D. NULL values are treated as zero.

Answer: B

NEW QUESTION # 24
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