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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using SET Operators | 5% | - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements |
| Topic 2: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 3: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 4: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Transaction management and control - Multi-table INSERT and MERGE statements |
| Topic 5: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Topic 6: Retrieving and Sorting Data | 15% | - DEFINE and VERIFY commands - Limiting rows and substitution variables - Using SELECT statement and column aliases - Sorting query results - Operator precedence rules - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword |
| Topic 7: Using Functions | 25% | - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - NVL, NULLIF, COALESCE functions - Character functions for string manipulation - Group functions and grouping data - ROUND, TRUNC, MOD functions - Restricting group results - Nested functions - Date arithmetic and date functions - Data type conversion: implicit and explicit |
| Topic 8: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage indexes - Create and manage sequences |
| Topic 9: DDL for Tables and Relationships | 15% | - Table structure, columns, data types - CREATE TABLE statement - Drop columns, set unused columns - TRUNCATE TABLE statement - Constraints management - Views management - Temporary and external tables |
| Topic 10: Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Topic 11: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects - Relationship between database and SQL |
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NEW QUESTION # 106
What will the following query return?
SELECT EXTRACT(YEAR FROM CURRENT_DATE) AS year FROM dual;
Answer: B
NEW QUESTION # 107
Which SQL clause can be used in Oracle to limit the number of rows returned?
Answer: B
NEW QUESTION # 108
What does the INTERSECT operator do in SQL?
Answer: D
NEW QUESTION # 109
What will the following SQL query return?
SELECT TRUNC(15.678, 2) AS truncated_value FROM dual;
Answer: B
NEW QUESTION # 110
Which type of INSERT statement allows inserting rows into multiple tables using a single SELECT query?
Answer: D
NEW QUESTION # 111
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