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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Functions | 25% | - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - ROUND, TRUNC, MOD functions - Date arithmetic and date functions - Group functions and grouping data - NVL, NULLIF, COALESCE functions - Character functions for string manipulation - Restricting group results - Data type conversion: implicit and explicit |
| Topic 2: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 3: Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Topic 4: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types - Using data dictionary views |
| Topic 5: DDL for Tables and Relationships | 15% | - TRUNCATE TABLE statement - Constraints management - Table structure, columns, data types - Temporary and external tables - Drop columns, set unused columns - CREATE TABLE statement - Views management |
| Topic 6: Using SET Operators | 5% | - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements |
| Topic 7: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
| Topic 8: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 9: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| Topic 10: Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword - Sorting query results - DEFINE and VERIFY commands - Using SELECT statement and column aliases - Operator precedence rules - Limiting rows and substitution variables |
| Topic 11: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
What is the purpose of using external tables in Oracle Database?
Correct Answer: C 🗳️
Which of the following SET operators combines results from two queries and removes duplicates?
Correct Answer: A 🗳️
What is the difference between UNION and UNION ALL?
Correct Answer: C 🗳️
In a relational database, what is a foreign key?
Correct Answer: D 🗳️
Which INTERVAL data type would you use to store a period of time in years and months?
Correct Answer: C 🗳️
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