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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 2: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations - Matching SELECT statements |
| Topic 3: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Topic 4: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 5: Retrieving and Sorting Data | 15% | - Operator precedence rules - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword - Sorting query results - Using SELECT statement and column aliases - Limiting rows and substitution variables - DEFINE and VERIFY commands |
| Topic 6: DDL for Tables and Relationships | 15% | - Temporary and external tables - TRUNCATE TABLE statement - Drop columns, set unused columns - Views management - CREATE TABLE statement - Table structure, columns, data types - Constraints management |
| Topic 7: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types - Using data dictionary views |
| Topic 8: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| Topic 9: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Transaction management and control - Multi-table INSERT and MERGE statements |
| Topic 10: Using Functions | 25% | - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - NVL, NULLIF, COALESCE functions - Data type conversion: implicit and explicit - Nested functions - Character functions for string manipulation - Date arithmetic and date functions - ROUND, TRUNC, MOD functions - Restricting group results - Group functions and grouping data |
| Topic 11: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage synonyms - Create and manage sequences |
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NEW QUESTION # 72
What is the primary purpose of granting privileges in Oracle Database?
Answer: A
NEW QUESTION # 73
Which SQL function calculates the number of months between two dates?
Response:
Answer: B
NEW QUESTION # 74
Which command would drop an index from a table?
Answer: A
NEW QUESTION # 75
What does the following query return?
SELECT department_id FROM departments
INTERSECT
SELECT department_id FROM employees;
Answer: C
NEW QUESTION # 76
What does the NEXTVAL pseudocolumn do in SQL?
Answer: D
NEW QUESTION # 77
......
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