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Oracle 1Z0-171 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Managing Indexes, Synonyms, Sequences	5%	- Create and manage indexes - Create and manage synonyms - Create and manage sequences
Topic 2: Retrieving and Sorting Data	15%	- Operators, literals, DISTINCT keyword - Operator precedence rules - Limiting rows and substitution variables - Using SELECT statement and column aliases - Sorting query results - Arithmetic expressions and NULL values - DEFINE and VERIFY commands
Topic 3: Using SET Operators	5%	- Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators
Topic 4: Data Dictionary and Time Zones	5%	- INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views
Topic 5: Managing Tables with DML	5%	- Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements
Topic 6: Using Subqueries	5%	- Correlated subqueries for update and delete - Single-row and multi-row subqueries
Topic 7: Using Functions	25%	- Date arithmetic and date functions - Data type conversion: implicit and explicit - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - NVL, NULLIF, COALESCE functions - Nested functions - Restricting group results - Character functions for string manipulation - ROUND, TRUNC, MOD functions - Group functions and grouping data
Topic 8: DDL for Tables and Relationships	15%	- Constraints management - Drop columns, set unused columns - Temporary and external tables - CREATE TABLE statement - Table structure, columns, data types - TRUNCATE TABLE statement - Views management
Topic 9: Displaying Data from Multiple Tables	10%	- Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join
Topic 10: Controlling User Access	5%	- Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables
Topic 11: Relational Database Concepts	5%	- Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects

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Oracle Database 23ai SQL Associate Sample Questions (Q99-Q104):

NEW QUESTION # 99
Which of the following best describes a relational database?

A. A database that organizes data hierarchically
B. A database where all data is stored as key-value pairs
C. A database that uses a tabular structure with rows and columns to represent relationships between data entities
D. A flat file system with no defined relationships between data

Answer: C

NEW QUESTION # 100
What does the following query return?
SELECT department_id FROM departments
INTERSECT
SELECT department_id FROM employees;

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

Answer: A

NEW QUESTION # 101
What will the following query do?
SELECT employee_id, salary
FROM employees
WHERE salary > (SELECT AVG(salary) FROM employees);

A. Return employees with a salary equal to the average salary
B. Return employees with a salary above the average salary
C. Return all employees and their salaries
D. Return employees with a salary below the average salary

Answer: B

NEW QUESTION # 102
What is the result of using the following SQL query?
SELECT 100 + NULL AS result;

A. An error
B. 0
C. NULL
D. 1

Answer: C

NEW QUESTION # 103
Which command grants a user the ability to query data from a specific table?

A. GRANT SELECT ON table_name TO user_name;
B. ENABLE SELECT ON table_name TO user_name;
C. ALLOW SELECT ON table_name TO user_name;
D. GRANT ALL ON table_name TO user_name;

Answer: A

NEW QUESTION # 104
......

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