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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Topic 2: Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 3: Retrieving and Sorting Data | 15% | - Operator precedence rules - Using SELECT statement and column aliases - Arithmetic expressions and NULL values - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - DEFINE and VERIFY commands - Sorting query results |
| Topic 4: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
| Topic 5: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 6: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 7: DDL for Tables and Relationships | 15% | - Table structure, columns, data types - Drop columns, set unused columns - CREATE TABLE statement - Temporary and external tables - Constraints management - TRUNCATE TABLE statement - Views management |
| Topic 8: Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
| Topic 9: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - Relationship between database and SQL - SQL SELECT clauses and ERD components |
| Topic 10: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 11: Using Functions | 25% | - Data type conversion: implicit and explicit - Character functions for string manipulation - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Date arithmetic and date functions - NVL, NULLIF, COALESCE functions - Restricting group results - ROUND, TRUNC, MOD functions - Group functions and grouping data |
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NEW QUESTION # 19
Which of the following is true about foreign key constraints in SQL?
Answer: C
NEW QUESTION # 20
What is the primary purpose of granting privileges in Oracle Database?
Answer: D
NEW QUESTION # 21
Which type of INSERT statement allows inserting rows into multiple tables using a single SELECT query?
Answer: D
NEW QUESTION # 22
What does the following SQL statement do?
SELECT e.employee_id, d.department_name
FROM employees e
JOIN departments d ON e.department_id = d.department_id;
Answer: D
NEW QUESTION # 23
Which SQL keyword is used to remove duplicate rows from the result set of a query?
Answer: C
NEW QUESTION # 24
......
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