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Oracle Database 23ai SQL Associate: 1Z1-171 Exam
"Oracle Database 23ai SQL Associate", also known as 1Z1-171 exam, is a Oracle Certification. With the complete collection of questions and answers, ExamcollectionPass has assembled to take you through 111 Q&As to your 1Z1-171 Exam preparation. In the 1Z1-171 exam resources, you will cover every field and category in Oracle Database Certification helping to ready you for your successful Oracle Certification.
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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Using Functions | 25% | - Data type conversion: implicit and explicit - ROUND, TRUNC, MOD functions - Group functions and grouping data - Character functions for string manipulation - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - Date arithmetic and date functions - NVL, NULLIF, COALESCE functions - Restricting group results |
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Transaction management and control - Multi-table INSERT and MERGE statements |
| Retrieving and Sorting Data | 15% | - Sorting query results - DEFINE and VERIFY commands - Operator precedence rules - Operators, literals, DISTINCT keyword - Using SELECT statement and column aliases - Limiting rows and substitution variables - Arithmetic expressions and NULL values |
| Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
| DDL for Tables and Relationships | 15% | - Drop columns, set unused columns - Table structure, columns, data types - CREATE TABLE statement - Views management - Temporary and external tables - TRUNCATE TABLE statement - Constraints management |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage indexes - Create and manage synonyms |
Oracle Database 23ai SQL Associate Sample Questions:
Which SET operator returns rows from the first query that are not present in the second query?
- A. UNION
- B. INTERSECT
- C. UNION ALL
- D. MINUS
Correct Answer: D 🗳️
What type of join does the following query perform?
SELECT *
FROM employees e, departments d
WHERE e.department_id = d.department_id;
- A. CROSS JOIN
- B. NATURAL JOIN
- C. OUTER JOIN
- D. EQUI JOIN
Correct Answer: D 🗳️
What happens when the TRUNCATE TABLE statement is executed?
- A. Deletes only the last row in the table
- B. Deletes the table structure permanently
- C. Deletes all rows in the table and logs the operation for rollback
- D. Deletes all rows in the table without logging the operation for rollback
Correct Answer: D 🗳️
What will the following SQL query return?
SELECT TRUNC(15.678, 2) AS truncated_value FROM dual;
- A. 15.6
- B. 15.67
- C. 15.68
- D. 15.678
Correct Answer: B 🗳️
Which statement can be used to undo changes made in a transaction?
- A. MERGE
- B. ROLLBACK
- C. COMMIT
- D. SAVEPOINT
Correct Answer: B 🗳️
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