The document discusses software development life cycles (SDLC) and three common SDLC models: the waterfall model, spiral model, and agile model. It provides an overview of each model, including their key phases, advantages, and disadvantages. The waterfall model is the oldest and most widely used, following a linear sequence of phases. The spiral model and agile model allow for more flexibility and adaptation during development.

1. Instructed on: 11-Nov-2011 | Session: #02
By: Alaa’ Amr – Miral Hossam – Mohanad Yehia
Topic Code: MIX-01-2012
All Copy Rights Saved to the 7th Students’ Conference on Communication and Information Based in the Faculty of Computers and Information Cairo University – Egypt 2011/2012 www.scci-cu.com

2. Agenda:
 SDLC
 Models:
 Water Fall Model.
 Spiral Model.
 Agile Model.

3. SDLC:
 Stands for Software Development Life
Cycle.
 Standard model used word wide to
develop a software.
 Necessary to ensure the quality of the
software.
 Logical steps taken to develop a
software product.

5. SDLC:
1. Analysis.
2. Planning.
3. Implementation.
4. Testing.

6. 1-Analysis:
 The first and the most important phase
in the SDLC.
Determine where the problem is.
 Breaking down the system.
 Requirements.
Must be done carefully.
Any error in this phase will cost a lot !!

7. 2-Planning:
Determine who will do what !
 Tasks are assigned to team members.
 It all starts here.

8. 3-Implementation:
-The most expensive phase.
 Also the longest one!

9. 4-Testing:
 The never ending phase.
 In this phase we TEST, TEST, TEST,
and TEST.
 Very important phase.

10. SDLC Models:
 Water Fall Model
 Spiral Model
 Agile Model

11. Water Fall Model:
The waterfall model is
the oldest and most
widely used model in the
field of software
development.

12. Advantages & Disadvantages:
 Advantages:  Disadvantages:
 Linear model.  Unidirectional.
 Documentation.  Unclear requirements
lead to confusion.
 Testing (software
coding).  Client’s approval is in
the final stage.

13. Spiral Model:

14. Advantages & Disadvantages:
 Advantages:  Disadvantages:
 Large and complicated  Works on complicated
projects. projects only.
 Adaptability with  An experienced and
changes. skilled team are
required.
 Testing at each phase.

15. Agile Model:
Requirements
Design
Implementation
Prioritize
Verification

17. Key Features of Agile Software
Development:
 Iterative.
 Active Customer involvement.
 Fixed Time.
 Priority based delivery.

18. Key Features of Agile Software
Development (cont’d):
 Adaptive.
 Empowered Teams.
 Rapid development.
 Simplicity.

19. Agile working flow STORY BOARD:

20. Advantages & Disadvantages:
 Advantages:  Disadvantages:
 Customer Satisfaction.  Not suitable for handling
complex dependencies.
 Saves Time.
 More risk of
 Testing.
sustainability,
maintainability and
extensibility.
 Suitable for fixed or
changing requirements.  Strict delivery
management dictates
. the scope, functionality
to be delivered, and
adjustments to meet the
deadlines.

21. Summary:
 SDLC
 SDLC Models:
 Water Fall Model.
 Spiral Model.
 Agile Model.