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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
| Topic 2: Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Topic 3: Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Operator precedence rules - Using SELECT statement and column aliases - Limiting rows and substitution variables - Arithmetic expressions and NULL values - DEFINE and VERIFY commands - Sorting query results |
| Topic 4: Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 5: Using Functions | 25% | - ROUND, TRUNC, MOD functions - Nested functions - Date arithmetic and date functions - Data type conversion: implicit and explicit - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Restricting group results - Character functions for string manipulation - Group functions and grouping data - NVL, NULLIF, COALESCE functions |
| Topic 6: DDL for Tables and Relationships | 15% | - Drop columns, set unused columns - Temporary and external tables - CREATE TABLE statement - TRUNCATE TABLE statement - Constraints management - Table structure, columns, data types - Views management |
| Topic 7: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
| Topic 8: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 9: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage indexes - Create and manage sequences |
| Topic 10: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 11: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
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NEW QUESTION # 30
Which command grants a user the ability to query data from a specific table?
Answer: B
NEW QUESTION # 31
What does the UNION ALL operation do when selecting matching columns from different tables?
SELECT employee_id, salary FROM employees
UNION ALL
SELECT employee_id, bonus FROM bonuses;
Answer: C
NEW QUESTION # 32
Which SQL function calculates the number of months between two dates?
Response:
Answer: B
NEW QUESTION # 33
Which of the following is an example of an object privilege?
Answer: D
NEW QUESTION # 34
What happens if a privilege is revoked from a user who has granted the same privilege to others?
Answer: B
NEW QUESTION # 35
......
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