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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Drop columns, set unused columns - Views management - TRUNCATE TABLE statement - Constraints management - Temporary and external tables - Table structure, columns, data types |
| Topic 2: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects - Relationship between database and SQL |
| Topic 3: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 4: Retrieving and Sorting Data | 15% | - Limiting rows and substitution variables - Sorting query results - Operator precedence rules - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword - Using SELECT statement and column aliases - DEFINE and VERIFY commands |
| Topic 5: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 6: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| Topic 7: Using Functions | 25% | - Nested functions - Date arithmetic and date functions - ROUND, TRUNC, MOD functions - Data type conversion: implicit and explicit - Character functions for string manipulation - Restricting group results - Group functions and grouping data - NVL, NULLIF, COALESCE functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions |
| Topic 8: Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
| Topic 9: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 10: Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 11: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
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NEW QUESTION # 10
Which clause in an UPDATE statement typically uses a subquery to assign values to columns?
Answer: A
NEW QUESTION # 11
Which component of an ERD (Entity-Relationship Diagram) represents the attributes of an entity?
Answer: A
NEW QUESTION # 12
What will the following query do?
DELETE FROM employees
WHERE department_id = 20;
Answer: A
NEW QUESTION # 13
Which of the following can be achieved using a correlated subquery?
Answer: B
NEW QUESTION # 14
What does the NEXTVAL pseudocolumn do in SQL?
Answer: D
NEW QUESTION # 15
......
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