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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Transaction management and control - Multi-table INSERT and MERGE statements |
| Topic 2: Controlling User Access | 5% | - System vs object privileges - Roles creation and privilege assignment - Granting privileges on tables |
| Topic 3: Using Functions | 25% | - ROUND, TRUNC, MOD functions - Date arithmetic and date functions - Character functions for string manipulation - Restricting group results - Group functions and grouping data - Data type conversion: implicit and explicit - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - NVL, NULLIF, COALESCE functions - Nested functions |
| Topic 4: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 5: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 6: Retrieving and Sorting Data | 15% | - DEFINE and VERIFY commands - Using SELECT statement and column aliases - Arithmetic expressions and NULL values - Sorting query results - Operator precedence rules - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword |
| Topic 7: DDL for Tables and Relationships | 15% | - Table structure, columns, data types - CREATE TABLE statement - Temporary and external tables - Views management - TRUNCATE TABLE statement - Drop columns, set unused columns - Constraints management |
| Topic 8: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Topic 9: Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 10: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Topic 11: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
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NEW QUESTION # 15
Which SQL statement is used to insert a new row into a table?
Answer: A
NEW QUESTION # 16
What will the following query do?
SELECT employee_id, salary
FROM employees
WHERE salary > (SELECT AVG(salary) FROM employees);
Answer: D
NEW QUESTION # 17
What will the following query do?
DELETE FROM employees
WHERE department_id = 20;
Answer: B
NEW QUESTION # 18
Which of the following can be achieved using a correlated subquery?
Answer: A
NEW QUESTION # 19
What is the purpose of the SAVEPOINT statement?
Answer: C
NEW QUESTION # 20
......
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