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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 2: Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 3: Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations - Transaction management and control |
| Topic 4: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 5: Using Functions | 25% | - Nested functions - Group functions and grouping data - Restricting group results - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - ROUND, TRUNC, MOD functions - Character functions for string manipulation - Date arithmetic and date functions - NVL, NULLIF, COALESCE functions - Data type conversion: implicit and explicit |
| Topic 6: Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Using SELECT statement and column aliases - DEFINE and VERIFY commands - Sorting query results - Limiting rows and substitution variables - Operator precedence rules - Arithmetic expressions and NULL values |
| Topic 7: Controlling User Access | 5% | - System vs object privileges - Roles creation and privilege assignment - Granting privileges on tables |
| Topic 8: DDL for Tables and Relationships | 15% | - Views management - Drop columns, set unused columns - CREATE TABLE statement - Table structure, columns, data types - Constraints management - TRUNCATE TABLE statement - Temporary and external tables |
| Topic 9: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
| Topic 10: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| 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 # 17
What is the purpose of the SAVEPOINT statement?
Answer: A
NEW QUESTION # 18
What will the following query return?
SELECT TO_CHAR(SYSDATE, 'DD-MM-YYYY') AS formatted_date FROM dual;
Answer: A
NEW QUESTION # 19
Which data dictionary view lists all indexes created by the current user?
Answer: D
NEW QUESTION # 20
What is the output of the following query?
SELECT CURRENT_DATE FROM dual;
Answer: C
NEW QUESTION # 21
The column data type is converted to a primary key.
Answer: B
NEW QUESTION # 22
......
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