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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| Topic 2: DDL for Tables and Relationships | 15% | - TRUNCATE TABLE statement - Drop columns, set unused columns - Views management - CREATE TABLE statement - Constraints management - Temporary and external tables - Table structure, columns, data types |
| Topic 3: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements - Using ORDER BY with set operations |
| Topic 4: Retrieving and Sorting Data | 15% | - Limiting rows and substitution variables - DEFINE and VERIFY commands - Sorting query results - Using SELECT statement and column aliases - Operators, literals, DISTINCT keyword - Operator precedence rules - Arithmetic expressions and NULL values |
| Topic 5: Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - Transaction management and control - INSERT, UPDATE, DELETE operations |
| Topic 6: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 7: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| 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: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 10: Using Functions | 25% | - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Date arithmetic and date functions - Restricting group results - Group functions and grouping data - Character functions for string manipulation - ROUND, TRUNC, MOD functions - NVL, NULLIF, COALESCE functions - Nested functions - Data type conversion: implicit and explicit |
| Topic 11: Data Dictionary and Time Zones | 5% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
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NEW QUESTION # 53
Which of the following can be achieved using a correlated subquery?
Answer: D
NEW QUESTION # 54
What will the following query result in?
SELECT e.employee_id, e.manager_id
FROM employees e
WHERE e.manager_id IS NOT NULL;
Answer: A
NEW QUESTION # 55
Which type of join retrieves only the rows with matching values in both tables?
Answer: B
NEW QUESTION # 56
What happens if a DELETE statement is executed without a WHERE clause?
Answer: C
NEW QUESTION # 57
What does the following SQL statement do?
ALTER TABLE employees DROP COLUMN salary;
Answer: C
NEW QUESTION # 58
......
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