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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage indexes - Create and manage sequences |
| Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations - Transaction management and control |
| Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - Relationship between database and SQL - SQL SELECT clauses and ERD components |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Using Functions | 25% | - Character functions for string manipulation - Data type conversion: implicit and explicit - Date arithmetic and date functions - NVL, NULLIF, COALESCE functions - Restricting group results - ROUND, TRUNC, MOD functions - Nested functions - Group functions and grouping data - TO_CHAR, TO_NUMBER, TO_DATE conversion functions |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Retrieving and Sorting Data | 15% | - Sorting query results - Using SELECT statement and column aliases - Limiting rows and substitution variables - Operator precedence rules - DEFINE and VERIFY commands - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword |
| DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Views management - Temporary and external tables - TRUNCATE TABLE statement - Constraints management - Table structure, columns, data types - Drop columns, set unused columns |
Oracle Database 23ai SQL Associate Sample Questions:
1. What is the result of the following query?
SELECT employee_id
FROM employees
WHERE EXISTS (SELECT 1 FROM departments WHERE department_id = 10);
A) Employees with salaries greater than 10
B) Employee IDs from departments with no employees
C) Employee IDs from department 10
D) All employee IDs
2. Which type of privilege allows a user to perform administrative tasks, such as creating other users?
A) Schema privilege
B) Object privilege
C) System privilege
D) Table privilege
3. Which clause is used to ensure that only specific rows are deleted in a DELETE statement?
A) HAVING
B) SET
C) WHERE
D) FROM
4. What happens when a temporary table is created in Oracle Database?
A) It is stored in external files.
B) It cannot have any constraints.
C) It is permanently stored in the database.
D) It is created for the duration of a user session or transaction.
5. Which statement can be used to undo changes made in a transaction?
A) COMMIT
B) MERGE
C) SAVEPOINT
D) ROLLBACK
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: C | Question # 3 Answer: C | Question # 4 Answer: D | Question # 5 Answer: D |
