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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 2: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 3: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Topic 4: Using Functions | 25% | - Data type conversion: implicit and explicit - Character functions for string manipulation - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - ROUND, TRUNC, MOD functions - Group functions and grouping data - Date arithmetic and date functions - NVL, NULLIF, COALESCE functions - Restricting group results |
| Topic 5: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Constraints management - Drop columns, set unused columns - TRUNCATE TABLE statement - Table structure, columns, data types - Temporary and external tables - Views management |
| Topic 6: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 7: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 8: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - Relationship between database and SQL - SQL SELECT clauses and ERD components |
| Topic 9: Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Topic 10: Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 11: Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables - Operator precedence rules - Using SELECT statement and column aliases - DEFINE and VERIFY commands - Sorting query results |
Oracle Database 23ai SQL Associate Sample Questions:
What is the result of the following SQL query?
SELECT COALESCE(NULL, 100, 200) AS result FROM dual;
- A. NULL
- B. 100
- C. 200
- D. 300
Correct Answer: B 🗳️
Which of the following is true about foreign key constraints in SQL?
- A. They define a relationship between two tables.
- B. They ensure that a column only contains NULL values.
- C. They enforce the uniqueness of values in a column.
Correct Answer: A 🗳️
What will the following query result in?
SELECT e.employee_id, e.manager_id
FROM employees e
WHERE e.manager_id IS NOT NULL;
- A. Employees and their managers' IDs
- B. All employees and their IDs
- C. Employees who have managers
- D. Employees who do not have managers
Correct Answer: C 🗳️
Which of the following statements creates an ascending sequence starting at 100 and incrementing by 10?
- A. CREATE SEQUENCE seq_1 START WITH 100 INCREMENT BY -10;
- B. CREATE SEQUENCE seq_1 START WITH 10 INCREMENT BY 100;
- C. CREATE SEQUENCE seq_1 START WITH 10 INCREMENT BY -100;
- D. CREATE SEQUENCE seq_1 START WITH 100 INCREMENT BY 10;
Correct Answer: D 🗳️
Which Oracle SQL function returns the current date and time, including time zone information?
- A. CURRENT_DATE
- B. CURRENT_TIMESTAMP
- C. SYSDATE
- D. NOW
Correct Answer: B 🗳️
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