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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage indexes - Create and manage sequences |
| Topic 2: Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| 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 - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 5: DDL for Tables and Relationships | 15% | - Views management - Drop columns, set unused columns - Table structure, columns, data types - Temporary and external tables - TRUNCATE TABLE statement - CREATE TABLE statement - Constraints management |
| Topic 6: Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Topic 7: Using SET Operators | 5% | - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements |
| Topic 8: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 9: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Topic 10: Using Functions | 25% | - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Data type conversion: implicit and explicit - Date arithmetic and date functions - Nested functions - Group functions and grouping data - Restricting group results - Character functions for string manipulation - ROUND, TRUNC, MOD functions - NVL, NULLIF, COALESCE functions |
| Topic 11: Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - DEFINE and VERIFY commands - Limiting rows and substitution variables - Operator precedence rules - Operators, literals, DISTINCT keyword - Using SELECT statement and column aliases - Sorting query results |
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NEW QUESTION # 37
Which clause can be used with SET operators to sort the final result set?
Answer: B
NEW QUESTION # 38
How does SQL handle NULL values in arithmetic expressions?
Answer: C
NEW QUESTION # 39
What will the following query result in?
SELECT e.employee_id, e.manager_id
FROM employees e
WHERE e.manager_id IS NOT NULL;
Answer: B
NEW QUESTION # 40
What happens when the maximum value of a sequence is reached?
Answer: B
NEW QUESTION # 41
Which of the following is a valid reason to create a synonym?
Answer: D
NEW QUESTION # 42
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