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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| Topic 2: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 3: Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 4: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 5: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
| Topic 6: DDL for Tables and Relationships | 15% | - Table structure, columns, data types - CREATE TABLE statement - Temporary and external tables - Views management - TRUNCATE TABLE statement - Drop columns, set unused columns - Constraints management |
| Topic 7: Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
| Topic 8: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements - Using ORDER BY with set operations |
| Topic 9: Using Functions | 25% | - NVL, NULLIF, COALESCE functions - Date arithmetic and date functions - Data type conversion: implicit and explicit - Nested functions - ROUND, TRUNC, MOD functions - Restricting group results - Character functions for string manipulation - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Group functions and grouping data |
| Topic 10: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 11: Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values - Limiting rows and substitution variables - Operator precedence rules - Sorting query results - DEFINE and VERIFY commands |
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NEW QUESTION # 84
Which of the following can be achieved using a correlated subquery?
Answer: D
NEW QUESTION # 85
What does a Cartesian product in SQL result from?
Answer: B
NEW QUESTION # 86
Which of the following is an example of an object privilege?
Answer: B
NEW QUESTION # 87
What is the purpose of a correlated subquery?
Answer: C
NEW QUESTION # 88
What does the following SQL statement do?
ALTER TABLE employees DROP COLUMN salary;
Answer: B
NEW QUESTION # 89
......
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