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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: Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Topic 3: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 4: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 5: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects - Relationship between database and SQL |
| Topic 6: Using Functions | 25% | - Character functions for string manipulation - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - Data type conversion: implicit and explicit - Group functions and grouping data - ROUND, TRUNC, MOD functions - Date arithmetic and date functions - NVL, NULLIF, COALESCE functions - Restricting group results |
| Topic 7: Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Topic 8: DDL for Tables and Relationships | 15% | - Drop columns, set unused columns - TRUNCATE TABLE statement - Views management - Table structure, columns, data types - Temporary and external tables - Constraints management - CREATE TABLE statement |
| Topic 9: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements - Using ORDER BY with set operations |
| Topic 10: Retrieving and Sorting Data | 15% | - Operator precedence rules - DEFINE and VERIFY commands - Operators, literals, DISTINCT keyword - Using SELECT statement and column aliases - Sorting query results - Arithmetic expressions and NULL values - Limiting rows and substitution variables |
| Topic 11: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
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NEW QUESTION # 43
What is the default order of evaluation when multiple SET operators are used in a query?
Answer: D
NEW QUESTION # 44
What happens if a DELETE statement is executed without a WHERE clause?
Answer: A
NEW QUESTION # 45
Which clause can be used with SET operators to sort the final result set?
Answer: C
NEW QUESTION # 46
What happens if a privilege is revoked from a user who has granted the same privilege to others?
Answer: B
NEW QUESTION # 47
What will the following SQL query return?
SELECT TRUNC(15.678, 2) AS truncated_value FROM dual;
Answer: A
NEW QUESTION # 48
......
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