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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Views management - Temporary and external tables - TRUNCATE TABLE statement - Table structure, columns, data types - Constraints management - Drop columns, set unused columns |
| Topic 2: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage indexes - Create and manage synonyms |
| Topic 3: Using Functions | 25% | - Group functions and grouping data - NVL, NULLIF, COALESCE functions - Date arithmetic and date functions - Restricting group results - Character functions for string manipulation - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - ROUND, TRUNC, MOD functions - Data type conversion: implicit and explicit |
| Topic 4: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - Relationship between database and SQL - SQL SELECT clauses and ERD components |
| Topic 5: Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 6: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 7: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 8: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 9: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Topic 10: Controlling User Access | 5% | - Granting privileges on tables - System vs object privileges - Roles creation and privilege assignment |
| Topic 11: Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Operator precedence rules - Arithmetic expressions and NULL values - DEFINE and VERIFY commands - Using SELECT statement and column aliases - Sorting query results - Limiting rows and substitution variables |
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NEW QUESTION # 12
Which data dictionary view lists all indexes created by the current user?
Answer: C
NEW QUESTION # 13
What is the primary purpose of an index in SQL?
Answer: A
NEW QUESTION # 14
Which SQL keyword is used to define a substitution variable in a SQL statement?
Answer: C
NEW QUESTION # 15
Which clause is used to allow a user to grant a privilege to others?
Answer: B
NEW QUESTION # 16
What does the following SQL query return?
SELECT employee_id, salary * 12 AS annual_salary FROM employees;
Answer: B
NEW QUESTION # 17
......
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