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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Functions | 25% | - Group functions and grouping data - Date arithmetic and date functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - ROUND, TRUNC, MOD functions - Character functions for string manipulation - Data type conversion: implicit and explicit - NVL, NULLIF, COALESCE functions - Restricting group results |
| Topic 2: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 3: Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Topic 4: Data Dictionary and Time Zones | 5% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
| Topic 5: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Transaction management and control - Multi-table INSERT and MERGE statements |
| Topic 6: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 7: Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 8: Retrieving and Sorting Data | 15% | - Operator precedence rules - Using SELECT statement and column aliases - DEFINE and VERIFY commands - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables - Sorting query results |
| Topic 9: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 10: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Table structure, columns, data types - Constraints management - Temporary and external tables - TRUNCATE TABLE statement - Drop columns, set unused columns - Views management |
| Topic 11: Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
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NEW QUESTION # 59
What is the primary purpose of an index in SQL?
Answer: D
NEW QUESTION # 60
What is the output of the following query?
SELECT CURRENT_DATE FROM dual;
Answer: D
NEW QUESTION # 61
Which function is used to convert a string to uppercase in SQL?
Answer: B
NEW QUESTION # 62
Which clause in a SQL SELECT statement is used to define the columns to be retrieved?
Answer: A
NEW QUESTION # 63
What does the following SQL query do?
SELECT * FROM employees WHERE salary > 5000 ORDER BY department_id;
Answer: B
NEW QUESTION # 64
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