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Oracle 1Z0-171 Exam Syllabus Topics:

Section	Weight	Objectives
Relational Database Concepts	5%	- SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects
Managing Tables with DML	5%	- Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements
Controlling User Access	5%	- Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges
Using SET Operators	5%	- Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators
Data Dictionary and Time Zones	5%	- Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types
Displaying Data from Multiple Tables	10%	- Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join
Using Subqueries	5%	- Single-row and multi-row subqueries - Correlated subqueries for update and delete
DDL for Tables and Relationships	15%	- TRUNCATE TABLE statement - Drop columns, set unused columns - Views management - Constraints management - CREATE TABLE statement - Temporary and external tables - Table structure, columns, data types
Managing Indexes, Synonyms, Sequences	5%	- Create and manage sequences - Create and manage synonyms - Create and manage indexes
Using Functions	25%	- NVL, NULLIF, COALESCE functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - Character functions for string manipulation - ROUND, TRUNC, MOD functions - Data type conversion: implicit and explicit - Date arithmetic and date functions - Restricting group results - Group functions and grouping data
Retrieving and Sorting Data	15%	- DEFINE and VERIFY commands - Sorting query results - Limiting rows and substitution variables - Operator precedence rules - Using SELECT statement and column aliases - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword

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Oracle Database 23ai SQL Associate Sample Questions (Q81-Q86):

NEW QUESTION # 81
Which of the following statements creates an ascending sequence starting at 100 and incrementing by 10?

A. CREATE SEQUENCE seq_1 START WITH 10 INCREMENT BY 100;
B. CREATE SEQUENCE seq_1 START WITH 10 INCREMENT BY -100;
C. CREATE SEQUENCE seq_1 START WITH 100 INCREMENT BY -10;
D. CREATE SEQUENCE seq_1 START WITH 100 INCREMENT BY 10;

Answer: D

NEW QUESTION # 82
Which statement can be used to undo changes made in a transaction?

A. MERGE
B. SAVEPOINT
C. ROLLBACK
D. COMMIT

Answer: C

NEW QUESTION # 83
Which INTERVAL data type would you use to store a period of time in years and months?

A. INTERVAL MINUTE TO HOUR
B. INTERVAL DAY TO SECOND
C. INTERVAL MONTH TO DAY
D. INTERVAL YEAR TO MONTH

Answer: D

NEW QUESTION # 84
How does SQL handle NULL values in arithmetic expressions?

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

Answer: C

NEW QUESTION # 85
What does the INTERSECT operator do in SQL?

A. Returns rows from the first query that are not present in the second query
B. Combines rows from two queries and includes all duplicates
C. Combines all rows from two queries without any conditions
D. Returns rows that are present in both queries

Answer: D

NEW QUESTION # 86
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