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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Topic 2: Using Functions | 25% | - Group functions and grouping data - Character functions for string manipulation - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - Data type conversion: implicit and explicit - Restricting group results - Date arithmetic and date functions |
| Topic 3: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
| Topic 4: Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Topic 5: DDL for Tables and Relationships | 15% | - TRUNCATE TABLE statement - CREATE TABLE statement - Temporary and external tables - Constraints management - Drop columns, set unused columns - Table structure, columns, data types - Views management |
| Topic 6: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 7: Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 8: Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
| Topic 9: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage indexes - Create and manage synonyms |
| Topic 10: Retrieving and Sorting Data | 15% | - Operator precedence rules - Arithmetic expressions and NULL values - DEFINE and VERIFY commands - Limiting rows and substitution variables - Sorting query results - Using SELECT statement and column aliases - Operators, literals, DISTINCT keyword |
| Topic 11: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
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NEW QUESTION # 105
Which of the following statements creates an ascending sequence starting at 100 and incrementing by 10?
Answer: B
NEW QUESTION # 106
What is the purpose of the DBA_OBJECTS data dictionary view?
Answer: A
NEW QUESTION # 107
What is the result of the following query?
SELECT employee_id
FROM employees
WHERE EXISTS (SELECT 1 FROM departments WHERE department_id = 10);
Answer: C
NEW QUESTION # 108
What does the following query return?
SELECT employee_id
FROM employees
WHERE department_id IN (SELECT department_id FROM departments WHERE location_id = 1000);
Answer: D
NEW QUESTION # 109
What does the following query return?
SELECT department_id FROM departments
INTERSECT
SELECT department_id FROM employees;
Answer: B
NEW QUESTION # 110
......
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