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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Dictionary and Time Zones | 5% | - INTERVAL data types - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 2: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 3: Using Functions | 25% | - Date arithmetic and date functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Group functions and grouping data - Restricting group results - Data type conversion: implicit and explicit - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions - Character functions for string manipulation - Nested functions |
| Topic 4: Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables - Arithmetic expressions and NULL values - Using SELECT statement and column aliases - DEFINE and VERIFY commands - Operator precedence rules - Sorting query results |
| Topic 5: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects - Relationship between database and SQL |
| Topic 6: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 7: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations - Matching SELECT statements |
| Topic 8: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 9: Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
| Topic 10: Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
| Topic 11: DDL for Tables and Relationships | 15% | - Temporary and external tables - Views management - TRUNCATE TABLE statement - Constraints management - Table structure, columns, data types - CREATE TABLE statement - Drop columns, set unused columns |
Oracle Database 23ai SQL Associate Sample Questions:
Question 1
Which SQL JOIN keyword retrieves all rows from both tables, including those without matches?
A. FULL OUTER JOIN
B. RIGHT
C. LEFT
D. CROSS
Question 2
What does the following SQL statement do?
ALTER TABLE employees DROP COLUMN salary;
A. Deletes the employees table
B. Removes duplicate rows from the employees table
C. Sets the salary column to NULL for all rows
D. Drops the salary column from the employees table
Question 3
Which Oracle SQL function returns the current date and time, including time zone information?
A. CURRENT_TIMESTAMP
B. CURRENT_DATE
C. SYSDATE
D. NOW
Question 4
Which SET operator returns rows from the first query that are not present in the second query?
A. UNION ALL
B. INTERSECT
C. UNION
D. MINUS
Question 5
What is the purpose of using external tables in Oracle Database?
A. To manage data stored in external files using SQL
B. To improve the performance of complex queries
C. To store backup copies of database tables
D. To create temporary tables for session-specific data
Solutions:
| Question 1 Answer: A | Question 2 Answer: D | Question 3 Answer: A | Question 4 Answer: D | Question 5 Answer: A |
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