50+ DBMS MCQ – Database Management System MCQ with Answers
Multiple-choice questions are a fast way to test your DBMS fundamentals before exams or interviews. Below is a sample set from our full bank of 50+ questions with answers.
Sample MCQs
1. DBMS stands for:
a) Data Backup Management System b) Database Management System c) Data Block Memory System d) None
Answer: b) Database Management System
a) Data Backup Management System b) Database Management System c) Data Block Memory System d) None
Answer: b) Database Management System
2. Which of the following is NOT an ACID property?
a) Atomicity b) Consistency c) Isolation d) Scalability
Answer: d) Scalability
a) Atomicity b) Consistency c) Isolation d) Scalability
Answer: d) Scalability
3. A foreign key is used to:
a) Uniquely identify a row b) Link two tables c) Encrypt data d) Sort records
Answer: b) Link two tables
a) Uniquely identify a row b) Link two tables c) Encrypt data d) Sort records
Answer: b) Link two tables
4. Which normal form removes partial dependency?
a) 1NF b) 2NF c) 3NF d) BCNF
Answer: b) 2NF
a) 1NF b) 2NF c) 3NF d) BCNF
Answer: b) 2NF
5. Which SQL command is used to remove a table's structure entirely?
a) DELETE b) TRUNCATE c) DROP d) REMOVE
Answer: c) DROP
a) DELETE b) TRUNCATE c) DROP d) REMOVE
Answer: c) DROP
6. Which of these is a DML command?
a) CREATE b) INSERT c) ALTER d) DROP
Answer: b) INSERT
a) CREATE b) INSERT c) ALTER d) DROP
Answer: b) INSERT
7. In DBMS, a deadlock occurs when:
a) A query has a syntax error b) Two transactions wait on each other indefinitely c) A table has no primary key d) A join fails
Answer: b) Two transactions wait on each other indefinitely
a) A query has a syntax error b) Two transactions wait on each other indefinitely c) A table has no primary key d) A join fails
Answer: b) Two transactions wait on each other indefinitely
8. Which key can accept NULL values?
a) Primary key b) Foreign key c) Composite key d) Super key
Answer: b) Foreign key
a) Primary key b) Foreign key c) Composite key d) Super key
Answer: b) Foreign key
9. Which of these is a NoSQL database?
a) MySQL b) Oracle c) MongoDB d) PostgreSQL
Answer: c) MongoDB
a) MySQL b) Oracle c) MongoDB d) PostgreSQL
Answer: c) MongoDB
10. What does SQL stand for?
a) Structured Query Language b) Sequential Query Logic c) Simple Query Language d) None
Answer: a) Structured Query Language
a) Structured Query Language b) Sequential Query Logic c) Simple Query Language d) None
Answer: a) Structured Query Language
Why Practice MCQs?
MCQs help reinforce quick recall of definitions and rules, which is exactly how many university exams and screening rounds for job interviews are structured. Practicing regularly builds both speed and confidence.
This is a preview of 10 questions from the complete bank of 50+ MCQs — the full set with detailed explanations is available as part of the course.
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