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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 2: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Topic 3: Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Using SELECT statement and column aliases - Limiting rows and substitution variables - Operator precedence rules - Sorting query results - Operators, literals, DISTINCT keyword - DEFINE and VERIFY commands |
| Topic 4: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 5: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Topic 6: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 7: Controlling User Access | 5% | - Granting privileges on tables - System vs object privileges - Roles creation and privilege assignment |
| Topic 8: DDL for Tables and Relationships | 15% | - Temporary and external tables - Table structure, columns, data types - Drop columns, set unused columns - Views management - TRUNCATE TABLE statement - Constraints management - CREATE TABLE statement |
| Topic 9: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 10: Using Functions | 25% | - NVL, NULLIF, COALESCE functions - Group functions and grouping data - Data type conversion: implicit and explicit - Nested functions - Character functions for string manipulation - ROUND, TRUNC, MOD functions - Restricting group results - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Date arithmetic and date functions |
| 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 # 59
What does the COMMIT statement do in SQL?
Answer: C
NEW QUESTION # 60
What is the output of the following query?
SELECT CURRENT_DATE FROM dual;
Answer: C
NEW QUESTION # 61
What is the result of using the following SQL query?
SELECT 100 + NULL AS result;
Answer: C
NEW QUESTION # 62
What happens when a unique index is created on a table column?
Answer: D
NEW QUESTION # 63
What is the primary purpose of a primary key in a relational database?
Answer: A
NEW QUESTION # 64
......
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