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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 2: Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Topic 3: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage synonyms - Create and manage sequences |
| Topic 4: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - Relationship between database and SQL - SQL SELECT clauses and ERD components |
| Topic 5: Using Functions | 25% | - Nested functions - Group functions and grouping data - Character functions for string manipulation - ROUND, TRUNC, MOD functions - Date arithmetic and date functions - Data type conversion: implicit and explicit - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - NVL, NULLIF, COALESCE functions - Restricting group results |
| Topic 6: Retrieving and Sorting Data | 15% | - Sorting query results - DEFINE and VERIFY commands - Using SELECT statement and column aliases - Limiting rows and substitution variables - Operator precedence rules - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values |
| Topic 7: Data Dictionary and Time Zones | 5% | - INTERVAL data types - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 8: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 9: Using SET Operators | 5% | - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements |
| Topic 10: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 11: DDL for Tables and Relationships | 15% | - TRUNCATE TABLE statement - CREATE TABLE statement - Drop columns, set unused columns - Table structure, columns, data types - Constraints management - Temporary and external tables - Views management |
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NEW QUESTION # 104
Which of the following can be achieved using a correlated subquery?
Answer: A
NEW QUESTION # 105
Which type of INSERT statement allows inserting rows into multiple tables using a single SELECT query?
Answer: D
NEW QUESTION # 106
What is the result of the following query?
SELECT employee_id
FROM employees
WHERE EXISTS (SELECT 1 FROM departments WHERE department_id = 10);
Answer: D
NEW QUESTION # 107
Which statement can be used to undo changes made in a transaction?
Answer: A
NEW QUESTION # 108
Which of the following statements is true about constraints in Oracle Database?
Answer: A
NEW QUESTION # 109
......
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