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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Controlling User Access | 5% | - Granting privileges on tables - System vs object privileges - Roles creation and privilege assignment |
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
| Using Functions | 25% | - NVL, NULLIF, COALESCE functions - Character functions for string manipulation - Group functions and grouping data - Date arithmetic and date functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - ROUND, TRUNC, MOD functions - Data type conversion: implicit and explicit - Restricting group results |
| Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations - Matching SELECT statements |
| Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Operator precedence rules - Using SELECT statement and column aliases - Operators, literals, DISTINCT keyword - Sorting query results - DEFINE and VERIFY commands - Limiting rows and substitution variables |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects - Relationship between database and SQL |
| DDL for Tables and Relationships | 15% | - TRUNCATE TABLE statement - Drop columns, set unused columns - CREATE TABLE statement - Views management - Table structure, columns, data types - Constraints management - Temporary and external tables |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
Oracle Database 23ai SQL Associate Sample Questions:
1. What does the NEXTVAL pseudocolumn do in SQL?
A) Deletes the sequence from the database
B) Retrieves the next value in a sequence and increments the sequence
C) Resets the sequence to its starting value
D) Retrieves the current value of a sequence without incrementing it
2. What does the COMMIT statement do in SQL?
A) Begins a new transaction
B) Saves all pending changes to the database permanently
C) Rolls back changes to a previous state
D) Discards all pending changes in the transaction
3. What is the result of using the following SQL query?
SELECT 100 + NULL AS result;
A) 100
B) An error
C) NULL
D) 0
4. Which of the following can be achieved using a correlated subquery?
A) Inserting data into a table
B) Retrieving duplicate records from a single table
C) Joining two tables without a common column
D) Comparing each employee's salary to the average salary of their department
5. Which command creates a new role in Oracle Database?
A) CREATE NEW ROLE role_name;
B) ADD ROLE role_name;
C) CREATE ROLE role_name;
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: B | Question # 3 Answer: C | Question # 4 Answer: D | Question # 5 Answer: C |
Natividad 
Althea 
Genevieve 
Heather 
Cornell 
Katherine 
Abbott 
Kent 
Jocelyn 
Michelle 
Mona 
Philipppa 
