DBMS Exam Preparation
Full explanation, worked examples & memory tricks in the app
🎯 Exam Preparation Kit
DBMS Exam Preparation
English 11 leveled MCQs Free
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1
What you'll study, topic by topic
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Sample questions with model answers
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7 marks Long answer
What is View? Discuss about updatable & Non-updatable views in DBMS?
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A View is a virtual table in DBMS that can be updatable or non-updatable depending on the underlying query.
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7 marks Long answer
Different types of joins in SQL with examples.
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SQL joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN, each combining rows from two or more tables based on a related column.
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7 marks Long answer
Purpose of Normalisation? Explain 1NF, 2NF, 3NF with examples.
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Normalization reduces data redundancy and improves data integrity through 1NF, 2NF, and 3NF, each with specific rules and examples.
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4 marks Medium answer
What is Boyce-Codd Normal Form? How it differs from 3NF?
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BCNF is a stricter version of 3NF where every determinant is a candidate key, eliminating certain anomalies not addressed by 3NF.
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4 marks Medium answer
Explain ACID properties of transaction and why it is important.
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ACID properties ensure database transactions are processed reliably, encompassing Atomicity, Consistency, Isolation, and Durability.
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4 marks Medium answer
Discuss the concept of Serializability, View & Conflict Serializability.
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Serializability ensures transactions yield the same results as some serial execution, with view and conflict serializability being two types.
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2 marks Short answer
Short Notes on Lossless join in normalisation.
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A lossless join ensures that no information is lost when decomposing a relation into smaller relations.
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2 marks Short answer
Short Notes on Functional dependency in database.
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Functional dependency is a relationship that exists when one attribute uniquely determines another attribute.
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2 marks Short answer
Short Notes on Date & Time functions in SQL.
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Date & Time functions in SQL allow manipulation and formatting of date and time values for various operations.
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2 marks Short answer
Short Notes on Deadlock.
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A deadlock occurs when two or more transactions are waiting indefinitely for each other to release resources.
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2 marks Short answer
Short Notes on Surrogate Key.
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A surrogate key is an artificial key used to uniquely identify a record in a table, often an auto-incremented number.
The full exam-length answer is in the app.
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