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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Using Functions | 25% | - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Date arithmetic and date functions - Character functions for string manipulation - Data type conversion: implicit and explicit - NVL, NULLIF, COALESCE functions - Group functions and grouping data - Nested functions - Restricting group results - ROUND, TRUNC, MOD functions |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Data Dictionary and Time Zones | 5% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
| Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - DEFINE and VERIFY commands - Using SELECT statement and column aliases - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - Operator precedence rules - Sorting query results |
| Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
| DDL for Tables and Relationships | 15% | - Constraints management - TRUNCATE TABLE statement - Table structure, columns, data types - Drop columns, set unused columns - Temporary and external tables - Views management - CREATE TABLE statement |
| Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations - Matching SELECT statements |
| Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
Oracle Database 23ai SQL Associate Sample Questions:
1. Which type of privilege allows a user to perform administrative tasks, such as creating other users?
A) Schema privilege
B) Table privilege
C) Object privilege
D) System privilege
2. Which command can be used to rename a table in Oracle Database?
A) RENAME TABLE
B) RENAME
C) ALTER TABLE RENAME
D) MODIFY TABLE NAME
3. What happens if a DELETE statement is executed without a WHERE clause?
A) Only the first row is deleted.
B) All rows in the table are deleted.
C) No rows are deleted.
D) An error is raised.
4. Which INTERVAL data type would you use to store a period of time in years and months?
A) INTERVAL MINUTE TO HOUR
B) INTERVAL MONTH TO DAY
C) INTERVAL YEAR TO MONTH
D) INTERVAL DAY TO SECOND
5. What is the result of the following query?
SELECT employee_id
FROM employees
WHERE EXISTS (SELECT 1 FROM departments WHERE department_id = 10);
A) Employee IDs from departments with no employees
B) Employee IDs from department 10
C) Employees with salaries greater than 10
D) All employee IDs
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: B | Question # 3 Answer: B | Question # 4 Answer: C | Question # 5 Answer: D |
