The document discusses different software process models. It begins by describing the "build and fix" model, where software is constructed without planning and then repeatedly fixed based on user feedback. This approach is problematic for large projects. The document then introduces prescriptive process models which prescribe ordered activities and tasks. The waterfall model and V-model are described as examples of prescriptive linear sequential models. Finally, incremental process models are covered, which deliver software in prioritized increments to provide early user value.
This ppt covers the following
A strategic approach to testing
Test strategies for conventional software
Test strategies for object-oriented software
Validation testing
System testing
The art of debugging
Software engineering a practitioners approach 8th edition pressman solutions ...Drusilla918
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This ppt covers the following
A strategic approach to testing
Test strategies for conventional software
Test strategies for object-oriented software
Validation testing
System testing
The art of debugging
Software engineering a practitioners approach 8th edition pressman solutions ...Drusilla918
Full clear download( no error formatting) at: https://goo.gl/XmRyGP
software engineering a practitioner's approach 8th edition pdf free download
software engineering a practitioner's approach 8th edition ppt
software engineering a practitioner's approach 6th edition pdf
software engineering pressman 9th edition pdf
software engineering a practitioner's approach 9th edition
software engineering a practitioner's approach 9th edition pdf
software engineering a practitioner's approach 7th edition solution manual pdf
roger s. pressman
Software Development Life Cycle Models | What are Software Process Models ?
Here you are going to know What is Software Development Life Cycle Model or What are Software Process Models?
Software Process Models defines a distinct set of activities, actions, tasks, milestones, and work products that are required to engineer high-quality software...
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Software Process Models | Software Development Process Models | SDLC | Traditional Software Process Models | Waterfall Model Incremental Model | Prototyping Model | Evolutionary Process Model
Process models are not perfect, but provide road map for software engineering work. Software models provide stability, control, and organization to a process that if not managed can easily get out of control
Software process models are adapted to meet the needs of software engineers and managers for a specific project.
Software development process models
Rapid Application Development (RAD) Model
Evolutionary Process Models
Spiral Model
THE FORMAL METHODS MODEL
Specialized Process Models
The Concurrent Development Model
Discussion Post 1A software process model is a streamlined port.docxmadlynplamondon
Discussion Post 1:
A software process model is a streamlined portrayal of a product procedure. Each model speaks to a procedure from a particular point of view. The straightforward reason for these methods is to offer an altered programming advancement according to the prerequisites. Now and then they are otherwise called software improvement life cycle (SDLC) approaches. There are different sorts of models:
1. Waterfall model: When we have an organized procedure and when our necessities are clear as in basic frameworks that need itemized, exact, and precise archives to portray the framework to be delivered. It isn't acceptable when prerequisites are not satisfactory and on the off chance that they continually change and not defenseless for client communication. The periods of the cascade model are: Requirements, Design, Implementation, Testing, and Maintenance.
2. Prototype model: This model is utilized for the advancement of an early example, or the arrival of an item worked to test an idea. This is helpful when prerequisites aren't clear. In spite of the fact that it needs great apparatuses, brisk turn of events, and significant expenses. The periods of a model are: Establish goals, Define model usefulness, Develop the model, Evaluate the model.
3. Incremental and Iterative: They are appropriate for huge tasks and are more affordable to the difference in prerequisites since they bolster client associations with every addition. They don't fit into little ventures or very much organized tasks. The periods of iterative advancement are Inception, Elaboration, Construction, Transition.
4. Spiral: It is useful for highly hazardous or enormous ventures where the necessities are questionable. The venture's prosperity is exceptionally reliant on the hazard examination stage. It doesn't function admirably for littler ventures. Each circle in the winding speaks to a stage. Each circle is part of four areas: Objective setting, Risk appraisal, and decrease, Development, and approval, Planning.
5. Agile: It suits little medium size undertaking, with quick changes in the necessities as a client is included during each stage. Exceptionally constrained arranging is required to begin with the undertaking. There are a few distinctive dexterous techniques accessible, for example, Scrum, Crystal, Agile Modeling (AM), Extreme Programming (XP), and so on.
Discussion Post -2
Rapid Prototyping Model
It follows an iterative model of software development. This model is certainly found to be focusing on implementing the simple and initial phase but finds it difficult and complex when setting the broader feature when it is completed. Reduction of cost and time wastage along with improvement of model user-friendliness serves as its major strengths while inadequate analysis and high cost of prototype implementation give its limitation (Scacchi, W. 2002).
Advantages:
- Absolutely unacceptable for ...
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2. Outline
About software process model
Build and Fix Model
Why Models are needed?
Process as a "black box“ & Problem
Process as a “white box“ & Advantage
Prescriptive Model
Waterfall Model or Linear Sequential
Incremental Process Models
3. Software Process Model
Process models prescribe a distinct set of activities, actions,
tasks, milestones, and work products required to engineer
high quality software.
Process models are not perfect, but provide roadmap for
software engineering work.
Software models provide stability, control, and organization to
a project that if not managed can easily get out of control
Software process models are adapted to meet the needs of
software engineers and managers for a specific project.
5. Build and Fix Model
The earlier approach
Product is constructed without specification or any attempt
at design.
Developers simply build a product that is reworked as many
times as necessary to satisfy the client.
Model may work for small projects but is totally
unsatisfactory for products of any reasonable size.
Maintenance is high.
Source of difficulties and deficiencies
impossible to Predict
impossible to Manage
6. Why Models are needed?
Symptoms of inadequacy: The
Software Crisis
Scheduled Time and Cost
Exceeded
User Expectations Not Met
Poor Quality
7. Process as a "black box"
Product
Process
Informal
Requirements
Quality?
Uncertain /
Incomplete requirement
In the beginning
8. Problems
The assumption is that requirements can
be fully understood prior to development
Interaction with the customer occurs only at
the beginning (requirements) and end (after
delivery)
Unfortunately the assumption almost never
holds true
9. Process as a "white box"
Product
Process
Informal
Requirements
feedback
10. Advantages
Reduce risks by improving visibility
Allow project changes as the project progresses
based on feedback from the customer
11. Prescriptive Model
Prescriptive process models advocate an orderly
approach to software engineering
Organize framework activities in a certain order
Process framework activity with set of software
engineering actions.
Each action in terms of a task set that identifies the
work to be accomplished to meet the goals.
The resultant process model should be adapted to
accommodate the nature of the specific project,
people doing the work, and the work environment.
12. Prescriptive Model
Software engineer choose process
framework that includes activities like;
Communication
Planning
Modeling
Construction
Deployment
13. Prescriptive Model
Calling this model as “Prescribe”
because it recommend a set of
process elements, activities, action
task, work product & quality.
Each elements is inter-related to one
another (called workflow).
15. Limitations of the waterfall model
The model implies that you should attempt to
complete a given stage before moving on to
the next stage
Does not account for the fact that
requirements constantly change.
It also means that customers can not use
anything until the entire system is complete.
15
16. Limitations of the Waterfall Model
The model implies that once the product is
finished, everything else is maintenance.
Some teams sit ideal for other teams to
finish
Therefore, this model is only appropriate
when the requirements are well-understood
and changes will be fairly
limited during the design process.
17. Waterfall Model - Problems
Problems:
1. Real projects rarely follow the
sequential model.
2. Difficult for the customer to state all
the requirement explicitly.
3. Assumes patience from customer -
working version of program will not
available until product is complete.
19. V-Model
V-model depicts the relationship of quality
assurance actions to the Frame Work Activities.
In reality, there is no fundamental difference
between the classic life cycle and the V-model.
The V-model provides a way of visualizing how
verification and validation actions are applied to
earlier engineering work.
20. Incremental Process Model
Delivers software in small but usable pieces, each piece builds
on pieces already delivered
21. The Incremental Model
Rather than deliver the system as a single delivery, the
development and delivery is broken down into increments
with each increment delivering part of the required
functionality.
First Increment is often core product
For Example: Word Processor System
1st increment: Basic File Management, Editing, Production
2nd increment: Spell-Checker & Grammar
3rd increment: Advance Page Layout Properties
4th increment: Document Printing
22. The Incremental Model
It is particularly useful when enough
staffing is not available for the whole
project
Increment can be planned to manage
technical risks.
Incremental model focus more on
delivery of operational product with
each increment.
23. The Incremental Model
User requirements are prioritised and the highest
priority requirements are included in early
increments.
Once the development of an increment is started,
the requirements are frozen though requirements
for later increments can continue to evolve.
Customer value can be delivered with each
increment so system functionality is available
earlier.
24. The Incremental Model
Early increments act as a prototype
to help elicit requirements for later
increments.
Lower risk of overall project failure.
For example, a major system might
require the availability of new
hardware that is under development
and whose delivery date is uncertain.
25. The End
Thanks for Listening
Questions would be appriciated
Editor's Notes
Acceptance Testing is a test conducted to determine if the requirements specified or in contract are met.