Click to Subscribe Six Principles As institutions of higher education involved in the development of current and future managers we declare our willingness to progress in the implementation, within our institution, of the following Principles, starting with those that are more relevant to our capacities and mission.
Model With A Purpose. Many developers worry about whether their artifacts -- such as models, source code, or documents -- are detailed enough or if they are too detailed, or similarly if they are sufficiently accurate.
If you cannot identify why and for whom you are creating a model then why are you bothering to work on it all? Your first step is to identify a valid purpose for creating a model and the audience for that model, then based on that purpose and audience develop it to the point where it is both sufficiently accurate and sufficiently detailed.
This principle also applies to a change to an existing model: An important implication of this principle is that you need to know your audience, even when that audience is yourself.
For example, if you are creating a model for maintenance developers, what do they really need? Do they need a page comprehensive document or would a 10 page overview of how everything works be sufficient?
Go talk to them and find out. M aximize Stakeholder ROI.
Your project stakeholders are investing resources -- time, money, facilities, and so on -- to have software developed Principles and values of working with meets their needs. Stakeholders deserve to invest their resources the best way possible and not to have resources frittered away by your team.
Furthermore, they deserve to have the final say in how those resources are invested or not invested. If it was your resources, would you want it any other way?
Every artifact that you create, and then decide to keep, will need to be maintained over time.
If you decide to keep only three models then you clearly have less work to perform to support the same change, making you more agile because you are traveling lighter. Every time you decide to keep a model you trade-off agility for the convenience of having that information available to your team in an abstract manner hence potentially enhancing communication within your team as well as with project stakeholders.
Never underestimate the seriousness of this trade-off. Similarly, a development team that decides to develop and maintain a detailed requirements document, a detailed collection of analysis models, a detailed collection of architectural models, and a detailed collection of design models will quickly discover they are spending the majority of their time updating documents instead of writing source code.
You potentially need to use multiple models to develop software because each model describes a single aspect of your software. Different systems, different subsets. Just like you use some tools more than others, you will use some types of models more than others. The time between an action and the feedback on that action is critical.
By working with other people on a model, particularly when you are working with a shared modeling technology such as a whiteboard, CRC cards, or essential modeling materials such as sticky notes you are obtaining near-instant feedback on your ideas.
Working closely with your customer, to understand the requirements, to analyze those requirements, or to develop a user interface that meets their needs, provides opportunities for rapid feedback.
As you develop you should assume that the simplest solution is the best solution.
Keep your models as simple as possible. Requirements evolve over time. Project stakeholders can change as your project moves forward, new people are added and existing ones can leave.
Project stakeholders can change their viewpoints as well, potentially changing the goals and success criteria for your effort. You need an agile approach to change management. Furthermore, you do not need to capture every single detail in your models, you just need to get it good enough at the time.
Instead of futilely trying to develop an all encompassing model at the start, you instead can put a stake in the ground by developing a small model, or perhaps a high-level model, and evolve it over time or simply discard it when you no longer need it in an incremental manner. Nobody likes sloppy work.
The goal of software development is to produce high-quality working software that meets the needs of your project stakeholders in an effective manner. The primary goal is not to produce extraneous documentation, extraneous management artifacts, or even models. Any activity that does not directly contribute to this goal should be questioned and avoided if it cannot be justified in this light.From Values to Action: The Four Principles of Values-Based Leadership [Harry M.
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Six Principles. As institutions of higher education involved in the development of current and future managers we declare our willingness to progress in the implementation, within our institution, of the following Principles, starting with those that are more relevant to our capacities and mission.
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