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Str#6. "Four Kinds of Features" Strategy // identifying purpose and features

- Be certain to include features that cover the following:

1. Log important information.

2. Conduct business.

3. Analyze business results.

4. Interact with other systems.


Str#6a. "Add Features, Inspired by Patterns" Strategy // identifying purpose and features

- Add features inspired by the stereotypical responsibilities of a participant (in Patt#3, Participant-Transaction), transaction (in Patt#6, Transaction - Transaction Line Item), and place (in Patt#4, Place-Transaction).

- Examples: assess the performance of a participant (how many, how much), calculate the total of a transaction, assess the performance of a place (how many, how much).


Str#6b. "Organize and Prioritize Features" Strategy // identifying purpose and features

- Organize the features into &quotfeature categories" (also known as &quotuse cases").

. Example: maintaining employee info; assigning employees; assessing employee performance

- Prioritize the features.

. Identify the prioritization criteria. For example: normal sequence of business usage; greatest risk; customer interest; management interest; ease of implementation.


Str#7. "Calculation Results and Decision Points" Strategy // identifying purpose and features

- Add features that deliver calculation results.

- Add features that support decision points.


Str#8. "Best and Worst Features" Strategy // identifying purpose and features

- Ask users:

- What are the best features of the current system? Of competitive systems?

- What are the worst problems of the current system? Of competitive systems?

- What are the unneeded features of the current system? Of competitive systems?


Str#9. "Top 10" Strategy // identifying purpose and features

- Build a list of features.

- When you face an abundance of features (or classes, attributes, services), go after the top 10.

- Why: avoid being overwhelmed by a sea of low-level details.


Str#10. "Now and Later" Strategy // identifying purpose and features

- Consider current capabilities--and anticipated future capabilities.

- Ask, "How is it done now? How will it be done later, with the new system?"

- Look at things that people do to objects now, and consider features you can add (your automated objects might be able to do those actions to themselves).


Str#11. "Reengineer on the Boundaries" Strategy // identifying purpose and features

- Look at each organization or automated system boundary.

- Look for duplicate efforts on each side of such a boundary.

- Model the capability one time--and encourage some reengineering improvements for the organization.


Str#12. The "Smarter Devices" Strategy // identifying purpose and features

- Look for opportunities to use smarter devices, simplifying your object model and reducing software development schedule and costs.

- When building an object model in a field with rapidly changing data acquisition and control technology, be sure to take a systems perspective, spanning both hardware and software.

posted on 2005-10-11 16:51 ^ Mustang ^ 阅读(1044) 评论(0)  编辑  收藏 所属分类: OO

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