BCA 4th Semester DBMS Cheatsheet – Quick Notes for Exams

Ishan Dhungana August 16, 2025

BCA 4th Semester DBMS Cheatsheet – Database Management System Notes for Exam Preparation

Are you a BCA 4th Semester student under Tribhuvan University (TU) preparing for the Database Management System (DBMS) exam? If yes, then you already know that DBMS is one of the most important core subjects in the 4th semester. It covers both theory and practical concepts such as database design, normalization, SQL queries, stored procedures, triggers, indexing, security, and transactions.

To make exam revision simple, we’ve prepared a DBMS Cheatsheet in two compressed images that cover all important short notes, SQL commands, and concepts. These notes are designed to help you revise quickly and pass the exam confidently.

📘 Course Overview – DBMS (BCA 4th Sem, TU)

The DBMS course provides both conceptual understanding and hands-on skills in designing and managing databases. Students learn to handle backend operations of software applications and work with SQL queries to manipulate and retrieve data.

By the end of this course, students will be able to:

  • Understand database concepts, models, and architecture.

  • Perform database design using ER diagrams and normalization.

  • Use SQL for creating, altering, and querying data.

  • Implement stored procedures, triggers, and indexing.

  • Manage database security, transactions, and concurrency control.

📑 Syllabus Breakdown – TU BCA 4th Sem DBMS

Here’s a quick summary of what the subject covers:

Unit 1: Introduction to DBMS (3 hrs)

  • DBMS overview, objectives, merits & demerits.

  • Applications of DBMS.

Unit 2: Database Design, Architecture & Models (6 hrs)

  • Database design process, DBMS structure, 3-level architecture.

  • Data models: Hierarchical, Network, Relational, Object-based.

  • ER diagrams, weak & strong entities, aggregation, generalization.

Unit 3: Relational Database Model (4 hrs)

  • RDBMS structure & schema.

  • Keys: Primary, Foreign, Candidate, Composite.

  • Relational algebra operations (Select, Project, Join, Union, etc.).

Unit 4: Normalization (4 hrs)

  • Functional dependencies.

  • Normal forms: 1NF, 2NF, 3NF, BCNF, 4NF.

Unit 5: Creating & Altering Database and Tables (SQL) (6 hrs)

  • CREATE, ALTER, DROP.

  • Constraints (Primary Key, Foreign Key, Default, Check).

Unit 6: Manipulating & Querying Data (8 hrs)

  • INSERT, SELECT, UPDATE, DELETE.

  • Filtering data (WHERE, ORDER BY, GROUP BY).

  • Joins: Inner, Outer, Cross.

  • Nested queries, Views.

Unit 7: Stored Procedures, Triggers & Indexing (5 hrs)

  • Creating & executing stored procedures.

  • Triggers (single-row, multi-row).

  • Indexing techniques.

Unit 8: Query Processing & Security (5 hrs)

  • Query cost, optimization.

  • DBA roles, security issues, access control.

  • Data encryption & decryption.

Unit 9: Transactions & Concurrency Control (4 hrs)

  • ACID properties.

  • Locking, deadlock handling, time-based protocols.

📝 Why Use This DBMS Cheatsheet?

DBMS is theory-heavy and practical-oriented, which makes revision before exams stressful. Our DBMS cheatsheet images are:

  • ✅ Compressed & exam-focused – only the most important definitions, queries, and examples.

  • ✅ Time-saving – revise in 15 minutes before exams.

  • ✅ SQL-focused – includes commands that frequently appear in practical exams.

  • ✅ Concept-based – quick reminders of ER diagrams, normalization, keys, and ACID properties.

📚 What This Cheatsheet Covers

  • ✅ DBMS basics – merits, demerits, architecture, data models.

  • ✅ ER diagrams & Normalization up to 4NF.

  • ✅ Relational Algebra operations.

  • ✅ SQL commands – CREATE, ALTER, INSERT, SELECT, UPDATE, DELETE.

  • ✅ Joins & Subqueries with examples.

  • ✅ Stored Procedures, Triggers & Indexing.

  • ✅ Transaction management & ACID properties.

  • ✅ Database Security & DBA roles.

📷 Download / View DBMS Cheatsheet

We’ve compressed all the important DBMS notes for BCA 4th Sem into just two easy-to-read images.




If the images arenot clear , contact me at : https://www.facebook.com/profile.php?id=61579135036765 

📌 How to Revise with This Cheatsheet

  1. Read theory topics (ER model, normalization, ACID properties) from the cheatsheet.

  2. Practice SQL queries directly in MySQL or Oracle.

  3. Memorize commands for creating tables, joins, and nested queries.

  4. Revise triggers & procedures – common exam question.

  5. Go through security & transaction control – often asked in theory sections.

🎯 Final Words

The DBMS subject in BCA 4th Semester is not just about passing exams – it builds your foundation for backend development, database design, and software engineering. But when exams are near, you need quick, compressed notes.

That’s why this DBMS Cheatsheet (2 images) is the best revision tool. If you revise these before your exam, you can confidently answer both theory and practical questions. 🚀

Ishan Dhungana

Posted by Ishan Dhungana

Meet Ishan Dhungana, all the way from Nepal! I'm here to help students learn and understand Social Studies, BCA (that's Bachelor of Computer Applications), and Engineering subjects easily. My goal is to make learning fun and effective for everyone. Let's explore these topics together and make studying a breeze!

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