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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Functions | 25% | - Date arithmetic and date functions - Character functions for string manipulation - Group functions and grouping data - Nested functions - NVL, NULLIF, COALESCE functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Data type conversion: implicit and explicit - ROUND, TRUNC, MOD functions - Restricting group results |
| Topic 2: Retrieving and Sorting Data | 15% | - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values - Sorting query results - Operator precedence rules - Using SELECT statement and column aliases - DEFINE and VERIFY commands |
| Topic 3: Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
| Topic 4: Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Topic 5: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
| Topic 6: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - TRUNCATE TABLE statement - Table structure, columns, data types - Views management - Drop columns, set unused columns - Temporary and external tables - Constraints management |
| Topic 7: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Topic 8: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 9: Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
| Topic 10: Controlling User Access | 5% | - System vs object privileges - Roles creation and privilege assignment - Granting privileges on tables |
| 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 # 102
What is required for the queries combined by a SET operator to work correctly?
Answer: C
NEW QUESTION # 103
What is the purpose of the MERGE statement in SQL?
Answer: A
NEW QUESTION # 104
What will the following SQL statement output?
SELECT first_name || ' ' || last_name AS full_name FROM employees;
Answer: D
NEW QUESTION # 105
Which function is used to extract the year from a date in SQL?
Answer: A
NEW QUESTION # 106
What is the result of the following SQL query?
SELECT COALESCE(NULL, 100, 200) AS result FROM dual;
Answer: B
NEW QUESTION # 107
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