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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Topic 2: Retrieving and Sorting Data | 15% | - Sorting query results - Operators, literals, DISTINCT keyword - Using SELECT statement and column aliases - DEFINE and VERIFY commands - Operator precedence rules - Arithmetic expressions and NULL values - Limiting rows and substitution variables |
| Topic 3: Using Functions | 25% | - Group functions and grouping data - Restricting group results - Nested functions - Data type conversion: implicit and explicit - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Character functions for string manipulation - Date arithmetic and date functions - ROUND, TRUNC, MOD functions - NVL, NULLIF, COALESCE functions |
| Topic 4: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 5: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 6: Data Dictionary and Time Zones | 5% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
| Topic 7: Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations - Transaction management and control |
| Topic 8: Using SET Operators | 5% | - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements |
| Topic 9: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
| Topic 10: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Drop columns, set unused columns - Temporary and external tables - Views management - TRUNCATE TABLE statement - Table structure, columns, data types - Constraints management |
| Topic 11: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
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NEW QUESTION # 66
What will the following SQL statement output?
SELECT first_name || ' ' || last_name AS full_name FROM employees;
Answer: B
NEW QUESTION # 67
How does SQL handle NULL values in arithmetic expressions?
Answer: D
NEW QUESTION # 68
What is a role in Oracle Database?
Answer: B
NEW QUESTION # 69
Which type of privilege allows a user to perform administrative tasks, such as creating other users?
Answer: C
NEW QUESTION # 70
What does the following SQL statement do?
ALTER TABLE employees DROP COLUMN salary;
Answer: A
NEW QUESTION # 71
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