<< Chapter < Page Chapter >> Page >

Initiation and scope definition

The focus of this set of activities is on the effective determination of software requirements via various elicitation methods and the assessment of the project’s feasibility from a variety of standpoints. Once feasibility has been established, the remaining task within this process is the specification of requirements validation and change procedures.

Determination and negotiation of requirements

Software requirement methods for requirements elicitation (for example, observation), analysis (for example, data modeling, use-case modeling), specification, and validation (for example, prototyping) must be selected and applied, taking into account the various stakeholder perspectives. This leads to the determination of project scope, objectives, and constraints. This is always an important activity, as it sets the visible boundaries for the set of tasks being undertaken, and is particularly so where the novelty of the undertaking is high.

Feasibility analysis

Software engineers must be assured that adequate capability and resources are available in the form of people, expertise, facilities, infrastructure, and support (either internally or externally) to ensure that the project can be successfully completed in a timely and cost-effective manner (using, for example, a requirement-capability matrix). This often requires some “ballpark” estimation of effort and cost based on appropriate methods (for example, expert-informed analogy techniques).

Process for the review and revision of requirements

Given the inevitability of change, it is vital that agreement among stakeholders is reached at this early point as to the means by which scope and requirements are to be reviewed and revised (for example, via agreed change management procedures). This clearly implies that scope and requirements will not be “set in stone” but can and should be revisited at predetermined points as the process unfolds (for example, at design reviews, management reviews). If changes are accepted, then some form of traceability analysis and risk analysis should be used to ascertain the impact of those changes. A managed-change approach should also be useful when it comes time to review the outcome of the project, as the scope and requirements should form the basis for the evaluation of success.

Software project planning

The iterative planning process is informed by the scope and requirements and by the establishment of feasibility. At this point, software life cycle processes are evaluated and the most appropriate (given the nature of the project, its degree of novelty, its functional and technical complexity, its quality requirements, and so on) is selected. Where relevant, the project itself is then planned in the form of a hierarchical decomposition of tasks, the associated deliverables of each task are specified and characterized in terms of quality and other attributes in line with stated requirements, and detailed effort, schedule, and cost estimation is undertaken. Resources are then allocated to tasks so as to optimize personnel productivity (at individual, team, and organizational levels), equipment and materials utilization, and adherence to schedule. Detailed risk management is undertaken and the “risk profile” of the project is discussed among, and accepted by, all relevant stakeholders. Comprehensive software quality management processes are determined as part of the planning process in the form of procedures and responsibilities for software quality assurance, verification and validation, reviews, and audits. As an iterative process, it is vital that the processes and responsibilities for ongoing plan management, review, and revision are also clearly stated and agreed.

Questions & Answers

steps of developing a software
latest Reply
Present
win
which approach used to reduce number of test cases
Harshdeep Reply
I wish to ask what is the mean of a data model
Ateke Reply
explanation of working of computer
Gulfam Reply
hi
Moshiur
Hi
Malak
Hi
Yaw
How are you friends
Malak
Hlo nice too me
win
Thank for all fri
win
what's going on
Aden
lean for anything
win
hi guys
Ateke
hello.
Martins
hola como estas hey
Nurullohon
What is software engineering
parfait Reply
explain basic path testing for triangle problem?
Janavi Reply
Sorry
Mo
laptop ka meaning kaya hai
mahefuj Reply
hii bro
MOHD
hi
Aden
hi
Juhi
hi how are u doing bro
Aden
what you have?
Aden
Are you all Indians?
Bade
no I am ethiopian
Aden
I am a cameroonian
Ateke
please how can I design a game
Funmilayo Reply
manojsunani
Manoj
આ આ
Manoj
પોતાના
Manoj
JOHNBULL
EJE
how can supported ; learn me
win
what is software engineering
Darling Reply
software engineering are company manage
mahefuj
Text editor project in c++
Ayesha Reply
hi daddy
Sreenu
hello sir
Ranjith
are unmanned flying machines that are built and equipped with various kinds of software systems that allow them to see, hear, and act. Discuss some of the societal challenges of building such kinds of systems.
johni Reply
You have developed a prototype of a software system and your manager is very impressed by it. She proposes that it should be put into use as a production sys tem, with new features added as required. This avoids the expense of system dev immediately useful. Write a short report for your manager expl
johni
You have developed a prototype of a software system and your manager is very impressed by it. She proposes that it should be put into use as a production sys tem, with new features added as required. This avoids the expense of system dev immediately useful.
johni
You have developed a prototype of a software system and your manager is very impressed by it. She proposes that it should be put into use as a production sys tem, with new features added as required. This avoids the expense of system dev immediately useful.
johni
You have developed a prototype of a software system and your manager is very impressed by it. She proposes that it should be put into use as a production sys tem, with new features added as required. This avoids the expense of system dev immediately useful. Write a short report for your manager expl
johni
You have developed a prototype of a software system and your manager is very impressed by it. She proposes that it should be put into use as a production sys tem, with new features added as required. This avoids the expense of system dev immediately useful.
johni
what is cocomo ?
Surabhi Reply
?
StReeT
cocomo is cocote mo
Trixie
It means constructive cost model
Boris
HI
Masdul
hlo
Anuj
...
Moshiur
hello..
Moshiur
give me coding of these projects
Aman Reply
feasibility study&fact gathering techniques
Nachi Reply
write about software engineering
Mandala Reply
8.10.0.
BARBU

Get the best Software engineering course in your pocket!





Source:  OpenStax, Software engineering. OpenStax CNX. Jul 29, 2009 Download for free at http://cnx.org/content/col10790/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Software engineering' conversation and receive update notifications?

Ask