Siksha Sarovar

Siksha Sarovar (sikshasarovar.com) is a free educational web application that helps students in India learn programming and prepare for academic and competitive exams. The platform offers structured coding courses (C, C++, Python, Java, HTML, CSS, PHP, Power BI, AI, Machine Learning, Data Science), complete university curriculum notes for BCA/MCA students with previous year question papers, Class 10 and Class 12 CBSE/HBSE school notes, and dedicated preparation material for SSC, UPSC, Banking, Railway and other government exams. Browsing the site is completely free and requires no account. Users may optionally sign in with Google solely to save their learning progress, quiz scores and personal preferences across devices.

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Siksha Sarovar is a free e-learning platform for coding courses, BCA university notes and competitive exam preparation. Optional Google sign-in saves your learning progress across devices.

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1.0 Unit 1 Overview: Introduction, Process Models & Requirements

Lesson 2 of 24 in the free Software Engineering notes on Siksha Sarovar, written by Rohit Jangra.

Unit I — Overview

Unit I lays the conceptual foundation of software engineering. It answers four questions:

  1. What is software engineering? — definition, characteristics, evolution
  2. How is software built? — the Software Development Life Cycle (SDLC) and its models (Waterfall, Prototyping, Spiral, RAD, Agile)
  3. How do we know what to build? — requirements engineering, SRS document, IEEE 830
  4. How do we describe the system on paper? — system modeling (DFD, ER, UML)

Learning outcomes

After Unit I you should be able to:

  • Define software engineering and explain the software crisis
  • List software characteristics and types
  • Compare at least 5 SDLC models with their strengths and weaknesses
  • Identify functional vs non-functional requirements
  • Write the structure of an IEEE-830 SRS document
  • Draw a Data-Flow Diagram (Level 0 and Level 1) for a small system

Topic map

Chapter mapping (IPU)

  • TB1 (K.K. Aggarwal): Chapters 1, 3
  • TB2 (Sommerville): Chapters 3, 5

Typical exam weight

Unit I usually contributes 2 long questions (25 marks) in the end-term paper. The most repeated questions are:

  • Compare Waterfall and Spiral models — 12.5 marks
  • What is an SRS? Describe IEEE 830 structure — 12.5 marks
  • Differentiate functional and non-functional requirements with examples — short answer
  • Draw a Level-1 DFD for [a system] — 12.5 marks