12th Computer Science - Book Back Answers - Chapter 15 - English Medium Guides

 

 

Plus Two / 12th Computer Science - Book Back Answers - Chapter 15 - English Medium

Tamil Nadu Board 12th Standard Computer Science - Chapter 15: Book Back Answers and Solutions

    This post covers the book back answers and solutions for Chapter 15 from the Tamil Nadu State Board 12th Standard Computer Science textbook. These detailed answers have been carefully prepared by our expert teachers at KalviTips.com.

    We have explained each answer in a simple, easy-to-understand format, highlighting important points step by step under the relevant subtopics. Students are advised to read and memorize these subtopics thoroughly. Once you understand the main concepts, you’ll be able to connect other related points with real-life examples and confidently present them in your tests and exams.

    By going through this material, you’ll gain a strong understanding of Chapter 15 along with the corresponding book back questions and answers (PDF format).

Question Types Covered:

• 1 Mark Questions: Choose the correct answer, Fill in the blanks, Identify the correct statement, Match the following 
• 2 Mark Questions: Answer briefly 
• 3, 4, and 5 Mark Questions: Answer in detail

All answers are presented in a clear and student-friendly manner, focusing on key points to help you score full marks.

All the best, Class 12 students! Prepare well and aim for top scores. Thank you!

Chapter 15: Data manipulation through SQL

I. Choose the correct answer.

1. Which of the following is an organized collection of data?
(A) Database
(B) DBMS
(C) Information
(D) Records
Answer Key:
(A) Database

2. SQLite falls under which database system?
(A) Flat file database system
(B) Relational Database system
(C) Hierarchical database system
(D) Object oriented Database system
Answer Key:
(B) Relational Database system

3. Which of the following is a control structure used to traverse and fetch the records of the database?
(A) Pointer
(B) Key
(C) Cursor
(D) Insertion point
Answer Key:
(C) Cursor

4. Any changes made in the values of the record should be saved by the command
(A) Save
(B) Save As
(C) Commit
(D) Oblige
Answer Key:
(C) Commit

5. Which of the following executes the SQL command to perform some action?
(A) execute()
(B) key()
(C) cursor()
(D) run()
Answer Key:
(A) execute()

6. Which of the following function retrieves the average of a selected column of rows in a table?
(A) Add()
(B) SUM()
(C) AVG()
(D) AVERAGE()
Answer Key:
(C) AVG()

7. The function that returns the largest value of the selected column is
(A) MAX()
(B) LARGE()
(C) HIGH()
(D) MAXIMUM()
Answer Key:
(A) MAX()

8. Which of the following is called the master table?
(A) sqlite_master
(B) sql_master
(C) main_master
(D) master_main
Answer Key:
(A) sqlite_master

9. The most commonly used statement in SQL is
(A) cursor
(B) select
(C) execute
(D) commit
Answer Key:
(B) select

10. Which of the following keyword avoid the duplicate?
(B) Remove
(C) Where
(D) GroupBy
Answer Key:
(A) Distinct

II.Answer the following questions.

12th Computer Science (soon)

III. Answer the following questions.

12th Computer Science (Soon)

IV. Answer the following questions.

12th Computer Science (Soon)