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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 2: Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Topic 3: Retrieving and Sorting Data | 15% | - Limiting rows and substitution variables - Using SELECT statement and column aliases - Arithmetic expressions and NULL values - DEFINE and VERIFY commands - Operator precedence rules - Sorting query results - Operators, literals, DISTINCT keyword |
| Topic 4: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 5: Data Dictionary and Time Zones | 5% | - INTERVAL data types - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 6: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Transaction management and control - Multi-table INSERT and MERGE statements |
| Topic 7: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations - Matching SELECT statements |
| Topic 8: Using Functions | 25% | - Nested functions - Date arithmetic and date functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Restricting group results - Group functions and grouping data - ROUND, TRUNC, MOD functions - Data type conversion: implicit and explicit - NVL, NULLIF, COALESCE functions - Character functions for string manipulation |
| Topic 9: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 10: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
| Topic 11: DDL for Tables and Relationships | 15% | - Constraints management - Drop columns, set unused columns - Views management - CREATE TABLE statement - Temporary and external tables - Table structure, columns, data types - TRUNCATE TABLE statement |
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NEW QUESTION # 24
What happens when a temporary table is created in Oracle Database?
Answer: B
NEW QUESTION # 25
Which of the following data dictionary views provides information about constraints on tables?
Answer: C
NEW QUESTION # 26
What is a subquery in SQL?
Answer: A
NEW QUESTION # 27
What is the primary purpose of a primary key in a relational database?
Answer: C
NEW QUESTION # 28
Which type of subquery returns exactly one value?
Answer: C
NEW QUESTION # 29
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