Every Book Back multiple-choice question from Database Concepts (12th Standard Computer Science, Samacheer Kalvi) — each with the correct option highlighted and a clear, worked explanation. Free to read in English and Tamil.
Q1
What is the acronym of DBMS?
- A. DataBase Management Symbol
- B. Database Managing System
- C. DataBase Management SystemCorrect
- D. DataBasic Management System
Explanation. DBMS stands for Database Management System, which is a software that allows users to create, define, and manipulate databases.
Q2
A table is known as
- A. tuple
- B. attribute
- C. relationCorrect
- D. entity
Explanation. In the relational database model, a table is formally referred to as a relation.
Q3
Which database model represents parent-child relationship?
- A. Relational
- B. Network
- C. HierarchicalCorrect
- D. Object
Explanation. The hierarchical database model organizes data in a tree-like structure, representing parent-child relationships.
Q4
Relational database model was first proposed by
- A. E F CoddCorrect
- B. E E Codd
- C. E F Cadd
- D. E F Codder
Explanation. The relational database model was first proposed by Edgar Frank Codd in 1970.
Q5
What type of relationship does hierarchical model represents?
- A. one-to-one
- B. one-to-manyCorrect
- C. many-to-one
- D. many-to-many
Explanation. A hierarchical database model represents a one-to-many relationship, also called parent-child relationship.
Q6
Who is called Father of Relational Database from the following?
- A. Chris Date
- B. Hugh Darween
- C. Edgar Frank CoddCorrect
- D. Edgar Frank Cadd
Explanation. Edgar Frank Codd is considered the Father of Relational Database for inventing the relational database model.
Q7
Which of the following is an RDBMS?
- A. Dbase
- B. Foxpro
- C. Microsoft AccessCorrect
- D. Microsoft Excel
Explanation. Microsoft Access is a Relational Database Management System, whereas Dbase and FoxPro are DBMS softwares.
Q8
What symbol is used for SELECT statement?
- A. σCorrect
- B. Π
- C. X
- D. Ω
Explanation. In relational algebra, the Greek symbol sigma (σ) is used for the SELECT operation.
Q9
A tuple is also known as
- A. table
- B. rowCorrect
- C. attribute
- D. field
Explanation. In database tables, a row is formally known as a tuple.
Q10
Who developed ER model?
- A. ChenCorrect
- B. EF Codd
- C. Chend
- D. Chand
Explanation. The Entity-Relationship (ER) model was developed by Peter Chen in 1976.
About these Database Concepts questions
These are the Book Back multiple-choice questions for Database Concepts from the Tamil Nadu State Board (Samacheer Kalvi) 12th Standard Computer Science syllabus. Each question shows the correct option and an original, step-by-step explanation so you understand the method, not just the answer. Use the answer key above to jump to any question, then take the practice test to check yourself under exam-like conditions.
Frequently asked questions
How many MCQs are there in Database Concepts?
This chapter has 10 book-back multiple-choice questions, each with the correct answer and a step-by-step explanation.
Are these 12th Standard Computer Science MCQs free to practise online?
Yes. Every question, answer and explanation here is free, and you can also take them as a timed practice test.
Where can I find the Database Concepts book-back answers?
The correct option for each question is highlighted on this page with a worked explanation, plus a quick answer-key summary at the top.
