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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Using Functions | 25% | - Date arithmetic and date functions - Character functions for string manipulation - Restricting group results - Data type conversion: implicit and explicit - ROUND, TRUNC, MOD functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - Group functions and grouping data - NVL, NULLIF, COALESCE functions |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
| Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| DDL for Tables and Relationships | 15% | - Constraints management - CREATE TABLE statement - Drop columns, set unused columns - Views management - TRUNCATE TABLE statement - Table structure, columns, data types - Temporary and external tables |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - Operators, literals, DISTINCT keyword - DEFINE and VERIFY commands - Operator precedence rules - Limiting rows and substitution variables - Sorting query results - Arithmetic expressions and NULL values |
| Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types - Using data dictionary views |
| Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - Transaction management and control - INSERT, UPDATE, DELETE operations |
Oracle Database 23ai SQL Associate Sample Questions:
1. Which clause is used to allow a user to grant a privilege to others?
A) WITH SELECT OPTION
B) WITH GRANT OPTION
C) WITH SHARE OPTION
D) WITH ADMIN OPTION
2. What is a SELF JOIN in SQL?
A) A join used for Cartesian products
B) A join between tables with identical structures
C) A join of a table with itself
D) A join that does not require a WHERE clause
3. What does the following SQL query return?
SELECT employee_id, salary * 12 AS annual_salary FROM employees;
A) Employee IDs and their annual salaries
B) Monthly salaries of all employees
C) Only employees with salaries greater than 12
D) Salaries multiplied by 12 and stored in a new table
4. What is the result of the following SQL query?
SELECT COALESCE(NULL, 100, 200) AS result FROM dual;
A) 300
B) NULL
C) 100
D) 200
5. How is the LOCALTIMESTAMP function different from CURRENT_TIMESTAMP?
A) LOCALTIMESTAMP does not include fractional seconds, while CURRENT_TIMESTAMP does.
B) LOCALTIMESTAMP omits time zone information, while CURRENT_TIMESTAMP includes it.
C) LOCALTIMESTAMP returns only the date, while CURRENT_TIMESTAMP returns the date and time.
D) Both functions are identical in output.
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: C | Question # 3 Answer: A | Question # 4 Answer: C | Question # 5 Answer: B |
