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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values - Sorting query results - DEFINE and VERIFY commands - Operator precedence rules - Limiting rows and substitution variables |
| Topic 2: Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - Transaction management and control - INSERT, UPDATE, DELETE operations |
| Topic 3: Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Topic 4: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 5: Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Topic 6: Using Functions | 25% | - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions - Character functions for string manipulation - Group functions and grouping data - Date arithmetic and date functions - Nested functions - Data type conversion: implicit and explicit - Restricting group results - TO_CHAR, TO_NUMBER, TO_DATE conversion functions |
| Topic 7: Data Dictionary and Time Zones | 5% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
| Topic 8: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 9: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 10: DDL for Tables and Relationships | 15% | - Table structure, columns, data types - Drop columns, set unused columns - CREATE TABLE statement - Temporary and external tables - Views management - Constraints management - TRUNCATE TABLE statement |
| Topic 11: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements - Using ORDER BY with set operations |
1. What does the following SQL query do?
SELECT * FROM employees WHERE salary > 5000 ORDER BY department_id;
A) Retrieves all employees with a salary greater than 5000, sorted by salary in ascending order
B) Retrieves employees with salary less than 5000, sorted by department ID
C) Retrieves all employees with a salary greater than 5000, sorted by department ID in ascending order
D) Retrieves all employees, sorted by department ID
2. Which of the following data dictionary views provides information about constraints on tables?
A) USER_CONSTRAINTS
B) DBA_CONSTRAINTS
C) ALL_CONSTRAINTS
D) All of the above
3. Which of the following statements is true about constraints in Oracle Database?
A) Constraints can only be added when creating a table.
B) Constraints can be added or modified using the ALTER TABLE statement.
C) Constraints cannot reference other tables.
D) Constraints are automatically dropped when rows are deleted.
4. Which command creates a new role in Oracle Database?
A) CREATE ROLE role_name;
B) CREATE NEW ROLE role_name;
C) ADD ROLE role_name;
5. Which type of join includes rows that do not have matching values in the joined table?
A) INNER JOIN
B) SELF JOIN
C) OUTER JOIN
D) CROSS JOIN
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: D | Question # 3 Answer: B | Question # 4 Answer: A | Question # 5 Answer: C |
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