Incremental Model

Incremental Model:

  • Incremental model as the name indicated produces many versions.
  • Each version with a new functionality.
  • In it whole requirements is divided into various builds.
  • Each new build carry new functionality over previous build.
  • It seems like a multi “Waterfall Model cycle”.
  • In this each module passes through requirements, analysis, design, coding, testing, deployment, maintenance etc.
  • A first working software is produced in first release of this model.
  • Development of new builds continues until the complete system is released.
  • In this whole product got ready step by step.

Following is the illustration of Incremental Model:

Advantages of Incremental Model:

  • Generates working software quickly.
  • More flexible.
  • Less costly.
  • Gives time to think new function.
  • Able to fulfill all and the new requirements of end users without stopping application use.
  • Easier to test and debug during smaller iteration.
  • Customer can respond to each build.
  • Easier to manage.

Disadvantages of Incremental Model:

  • Total cost is higher than Waterfall model.
  • Each new build requires with a new functionality.
  • Requirements can go beyond the scope decided.
  • Needs good planning and design.

When to use Incremental Model:

  • When a new technology is being used.
  • When there are some high risk features and goals.
  • When there is a need to get the product early in the market.
  • When some requirements can be evolve with time.
  • When requirements of the system easily understood and well defined.

More topics from Software Engineering to read
Software Engineering covered following topics in Software Engineering.
Python Programming ↓ 👆
Java Programming ↓ 👆
JAVA covered following topics in these notes.
JAVA Programs
Principles of Programming Languages ↓ 👆
Principles of Programming Languages covered following topics in these notes.

Previous years solved papers:
A list of Video lectures References:
  1. Sebesta,”Concept of programming Language”, Pearson Edu 
  2. Louden, “Programming Languages: Principles & Practices” , Cengage Learning 
  3. Tucker, “Programming Languages: Principles and paradigms “, Tata McGraw –Hill. 
  4. E Horowitz, "Programming Languages", 2nd Edition, Addison Wesley

    Computer Organization and Architecture ↓ 👆

    Computer Organization and Architecture covered following topics in these notes.

    1. Structure of desktop computers
    2. Logic gates
    3. Register organization
    4. Bus structure
    5. Addressing modes
    6. Register transfer language
    7. Direct mapping numericals
    8. Register in Assembly Language Programming
    9. Arrays in Assembly Language Programming


    1. William stalling ,“Computer Architecture and Organization” PHI
    2. Morris Mano , “Computer System Organization ”PHI

    Computer Network ↓ 👆
    Computer Network covered following topics in these notes.
    1. Data Link Layer
    2. Framing
    3. Byte count framing method
    4. Flag bytes with byte stuffing framing method
    5. Flag bits with bit stuffing framing method
    6. Physical layer coding violations framing method
    7. Error control in data link layer
    8. Stop and Wait scheme
    9. Sliding Window Protocol
    10. One bit sliding window protocol
    11. A protocol Using Go-Back-N
    12. Selective repeat protocol
    13. Application layer
    1. Andrew S. Tanenbaum, David J. Wetherall, “Computer Networks” Pearson Education.
    2. Douglas E Comer, “Internetworking with TCP/IP Principles, Protocols, And Architecture",Pearson Education
    3. KavehPahlavan, Prashant Krishnamurthy, “Networking Fundamentals”, Wiley Publication.
    4. Ying-Dar Lin, Ren-Hung Hwang, Fred Baker, “Computer Networks: An Open Source Approach”, McGraw Hill.