Last Updated: Oct 09, 2026
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| Section | Weight | Objectives |
|---|---|---|
| Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations - Transaction management and control |
| DDL for Tables and Relationships | 15% | - Temporary and external tables - Constraints management - CREATE TABLE statement - TRUNCATE TABLE statement - Views management - Drop columns, set unused columns - Table structure, columns, data types |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - Arithmetic expressions and NULL values - Sorting query results - Operators, literals, DISTINCT keyword - DEFINE and VERIFY commands - Limiting rows and substitution variables - Operator precedence rules |
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - Relationship between database and SQL - SQL SELECT clauses and ERD components |
| Using Functions | 25% | - Data type conversion: implicit and explicit - Group functions and grouping data - Date arithmetic and date functions - ROUND, TRUNC, MOD functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Character functions for string manipulation - Nested functions - NVL, NULLIF, COALESCE functions - Restricting group results |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage indexes - Create and manage sequences |
What does the following SQL statement do?
CREATE TABLE employees (
employee_id NUMBER PRIMARY KEY,
first_name VARCHAR2(50),
hire_date DATE NOT NULL
);
Correct Answer: C 🗳️
What is the primary purpose of an index in SQL?
Correct Answer: B 🗳️
Which function returns the current system date and time in the database session's time zone?
Correct Answer: C 🗳️
Which command revokes a user's privilege to update a table?
Correct Answer: A 🗳️
What happens if a DELETE statement is executed without a WHERE clause?
Correct Answer: C 🗳️
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