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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
| Topic 2: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL 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: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 5: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 6: Retrieving and Sorting Data | 15% | - Limiting rows and substitution variables - Using SELECT statement and column aliases - Operator precedence rules - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword - Sorting query results - DEFINE and VERIFY commands |
| Topic 7: DDL for Tables and Relationships | 15% | - Drop columns, set unused columns - Temporary and external tables - Constraints management - TRUNCATE TABLE statement - CREATE TABLE statement - Table structure, columns, data types - Views management |
| Topic 8: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 9: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
| Topic 10: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 11: Using Functions | 25% | - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions - Character functions for string manipulation - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Group functions and grouping data - Restricting group results - Date arithmetic and date functions - Data type conversion: implicit and explicit - Nested functions |
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NEW QUESTION # 18
Which SQL statement is used to create a table?
Answer: B
NEW QUESTION # 19
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 # 20
What type of join does the following query perform?
SELECT *
FROM employees e, departments d
WHERE e.department_id = d.department_id;
Answer: B
NEW QUESTION # 21
What does the following SQL query return?
SELECT employee_id, salary * 12 AS annual_salary FROM employees;
Answer: B
NEW QUESTION # 22
What is the result of using the following SQL query?
SELECT 100 + NULL AS result;
Answer: A
NEW QUESTION # 23
......
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