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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
| Topic 2: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| Topic 3: DDL for Tables and Relationships | 15% | - Constraints management - Table structure, columns, data types - Temporary and external tables - CREATE TABLE statement - TRUNCATE TABLE statement - Drop columns, set unused columns - Views management |
| Topic 4: Controlling User Access | 5% | - System vs object privileges - Roles creation and privilege assignment - Granting privileges on tables |
| Topic 5: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Topic 6: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Topic 7: Using Functions | 25% | - Data type conversion: implicit and explicit - Restricting group results - Group functions and grouping data - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions - Date arithmetic and date functions - Character functions for string manipulation - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions |
| Topic 8: Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Limiting rows and substitution variables - Using SELECT statement and column aliases - Operator precedence rules - Operators, literals, DISTINCT keyword - Sorting query results - DEFINE and VERIFY commands |
| Topic 9: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 10: Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Topic 11: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
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NEW QUESTION # 63
Which data dictionary view provides information about all tables accessible to the current user?
Answer: A
NEW QUESTION # 64
Which command grants a user the ability to query data from a specific table?
Answer: B
NEW QUESTION # 65
What does the following SQL query do?
SELECT * FROM employees WHERE salary > 5000 ORDER BY department_id;
Answer: B
NEW QUESTION # 66
What is the result of using the following SQL query?
SELECT 100 + NULL AS result;
Answer: C
NEW QUESTION # 67
Which of the following is a valid reason to create a synonym?
Answer: D
NEW QUESTION # 68
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