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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Functions | 25% | - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - ROUND, TRUNC, MOD functions - Character functions for string manipulation - Restricting group results - Data type conversion: implicit and explicit - Group functions and grouping data - NVL, NULLIF, COALESCE functions - Date arithmetic and date functions |
| Topic 2: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 3: Controlling User Access | 5% | - Granting privileges on tables - System vs object privileges - Roles creation and privilege assignment |
| Topic 4: Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values - Using SELECT statement and column aliases - Limiting rows and substitution variables - Operator precedence rules - DEFINE and VERIFY commands - Sorting query results |
| Topic 5: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 6: Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 7: Using SET Operators | 5% | - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements |
| Topic 8: Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - Transaction management and control - INSERT, UPDATE, DELETE operations |
| Topic 9: Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Topic 10: DDL for Tables and Relationships | 15% | - TRUNCATE TABLE statement - Views management - CREATE TABLE statement - Constraints management - Temporary and external tables - Drop columns, set unused columns - Table structure, columns, data types |
| Topic 11: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
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NEW QUESTION # 18
What is the purpose of the DBA_OBJECTS data dictionary view?
Answer: B
NEW QUESTION # 19
What is the result of using the following SQL query?
SELECT 100 + NULL AS result;
Answer: A
NEW QUESTION # 20
What is the purpose of the SAVEPOINT statement?
Answer: B
NEW QUESTION # 21
What does the EXISTS operator check in a subquery?
Answer: C
NEW QUESTION # 22
Which clause is used to ensure that only specific rows are deleted in a DELETE statement?
Answer: D
NEW QUESTION # 23
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