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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% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
| Topic 3: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 4: Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - Operators, literals, DISTINCT keyword - Sorting query results - Limiting rows and substitution variables - Operator precedence rules - Arithmetic expressions and NULL values - DEFINE and VERIFY commands |
| Topic 5: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage indexes - Create and manage synonyms |
| Topic 6: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Transaction management and control - Multi-table INSERT and MERGE statements |
| Topic 7: DDL for Tables and Relationships | 15% | - Views management - Drop columns, set unused columns - Constraints management - Table structure, columns, data types - Temporary and external tables - TRUNCATE TABLE statement - CREATE TABLE statement |
| 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 - Granting privileges on tables - System vs object privileges |
| Topic 10: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Topic 11: Using Functions | 25% | - ROUND, TRUNC, MOD functions - Restricting group results - Nested functions - Character functions for string manipulation - Date arithmetic and date functions - NVL, NULLIF, COALESCE functions - Group functions and grouping data - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Data type conversion: implicit and explicit |
1. Which command can be used to rename a table in Oracle Database?
A) MODIFY TABLE NAME
B) RENAME TABLE
C) RENAME
D) ALTER TABLE RENAME
2. What does the following command do?
GRANT CREATE SESSION TO user_name;
A) Allows the user to create database objects
B) Allows the user to create new sessions for other users
C) Assigns the user to a specific role
D) Grants the user the ability to connect to the database
3. What is the output of the following query?
SELECT CURRENT_DATE FROM dual;
A) The current date and time in the database time zone
B) The current date in the session time zone
C) The current date in the database time zone
D) The current date and time in UTC
4. What is the result of the following SQL query?
SELECT COALESCE(NULL, 100, 200) AS result FROM dual;
A) 200
B) 300
C) NULL
D) 100
5. What will the following query do?
DELETE FROM employees
WHERE department_id = 20;
A) Raise an error because DELETE cannot use a WHERE clause
B) Delete the department_id column in the employees table
C) Delete all rows where department_id is 20
D) Delete all rows in the employees table
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: D | Question # 3 Answer: B | Question # 4 Answer: D | Question # 5 Answer: C |
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