DBMS Most Important Questions AKTU

With these types of question, you can score 60- 70 marks in this subject. But if you want to score more please solve more numericals..

Unit-1

1. What is database management system and structure of DBMS? 2. Data abstraction and levels of data abstraction. 3. What is key and concept of: – Super key – Candidate key – Primary key – Foreign key

4. ER diagram 5. UML, DML and DDL 4. Give example for one to one and one to many relationships. 5. Difference between Generalization, Specialization and Aggregation.

Unit-1

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1. Relational model 2. Relational algebra with numericals 3. Define join. Explain different types of join. 4. SQL 5. Triggers 6. Explain 1NF, 2NF, 3NF and BCNF with suitable example.

Unit-2

Green Star

8. Explain embedded SQL and dynamic SQL in detail. 9. referential integrity and entity integrity constraints.

Unit-2

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1. Full functional dependency and partial functional dependency. 2. Find the normal form of relation R(A, B, C, D, E) having FD set F= {A  B, BC  E, ED  A}.

Unit-3

3. Consider the universal relational schema R (A, B, C, D, E, F, G, H, I, J) and a set of following functional dependencies. F = {AB  C, A  DE, B  F, F  GH, D  IJ} determine the keys for R ? Decompose R into 2nd normal form..

Unit-3

1. Transaction 2. ACID properties of transaction [V Imp] 3. What is serializability ? Why serializability is required ? 4. What is schedule ? 5. Explain log based recovery.

Unit-4

7. Deadlock prevention schemes. 8. Data fragmentation with types. 9. What is concurrency control ?  10. Explain different types of recovery techniques. Give its advantages and disadvantages.

Unit-4

1. Explain two phase locking protocol with suitable example. 2. Phantom phenomena. 3. Multiple granularities 4. RDBMS

Unit-5

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