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| Section | Weight | Objectives |
|---|---|---|
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Drop columns, set unused columns - TRUNCATE TABLE statement - Views management - Constraints management - Table structure, columns, data types - Temporary and external tables |
| Using Functions | 25% | - NVL, NULLIF, COALESCE functions - Character functions for string manipulation - Restricting group results - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Group functions and grouping data - Date arithmetic and date functions - ROUND, TRUNC, MOD functions - Data type conversion: implicit and explicit |
| Controlling User Access | 5% | - Granting privileges on tables - System vs object privileges - Roles creation and privilege assignment |
| Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Transaction management and control - Multi-table INSERT and MERGE statements |
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage indexes - Create and manage sequences |
| Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - Arithmetic expressions and NULL values - DEFINE and VERIFY commands - Operator precedence rules - Operators, literals, DISTINCT keyword - Sorting query results - Limiting rows and substitution variables |
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NEW QUESTION # 66
What does the following command do?
GRANT CREATE SESSION TO user_name;
Answer: A
NEW QUESTION # 67
Which clause can be used with SET operators to sort the final result set?
Answer: B
NEW QUESTION # 68
What type of join does the following query perform?
SELECT *
FROM employees e, departments d
WHERE e.department_id = d.department_id;
Answer: C
NEW QUESTION # 69
What is the primary purpose of granting privileges in Oracle Database?
Answer: A
NEW QUESTION # 70
What will the following SQL query do?
UPDATE employees
SET salary = salary * 1.1
WHERE department_id = 10;
Answer: C
NEW QUESTION # 71
......
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