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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 2: Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
| Topic 3: Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 4: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 5: Using Functions | 25% | - Date arithmetic and date functions - Nested functions - Data type conversion: implicit and explicit - Restricting group results - ROUND, TRUNC, MOD functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Character functions for string manipulation - Group functions and grouping data - NVL, NULLIF, COALESCE functions |
| Topic 6: Retrieving and Sorting Data | 15% | - Sorting query results - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values - Operator precedence rules - Using SELECT statement and column aliases - Limiting rows and substitution variables - DEFINE and VERIFY commands |
| Topic 7: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 8: DDL for Tables and Relationships | 15% | - Views management - Drop columns, set unused columns - Table structure, columns, data types - Constraints management - TRUNCATE TABLE statement - CREATE TABLE statement - Temporary and external tables |
| Topic 9: Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
| Topic 10: Data Dictionary and Time Zones | 5% | - INTERVAL data types - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 11: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
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NEW QUESTION # 40
Which of the following SET operators combines results from two queries and removes duplicates?
Answer: C
NEW QUESTION # 41
What is a role in Oracle Database?
Answer: D
NEW QUESTION # 42
Which clause is used to ensure that only specific rows are deleted in a DELETE statement?
Answer: B
NEW QUESTION # 43
What is the purpose of the DBA_OBJECTS data dictionary view?
Answer: B
NEW QUESTION # 44
What does the NEXTVAL pseudocolumn do in SQL?
Answer: D
NEW QUESTION # 45
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