Download Art of Software Modeling by Benjamin A. Lieberman PDF

By Benjamin A. Lieberman

Utilizing a multidisciplinary process, The artwork of software program Modeling covers version conception, perform, and presentation intimately. This ebook describes the using desire for version construction and demonstrates the right way to create process versions. featuring version examples of industrial workflows, requisites catch, and software program structure documentation, the textual content discusses study and data trap, version varieties, and verification. version details, attention of conception and cognition of diagrams, version view composition, colour thought, and presentation concepts also are integrated to demonstrate the presentation. every one part is self sufficient to permit readers to customise the textual content to their wishes.

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You have access to the user interface so the investigation could begin with the user functionality by inspection of the interface behavior—perhaps with an expert user as a guide; a top-down approach. Perhaps you wish to better understand the physical database data model before moving into the business logic that manipulates that data; a bottom-up approach. indb 17 11/19/06 4:15:07 PM 18 n The Art of Software Modeling Table 2-1 Overview of Analysis Approaches Positive Aspects Negative Aspects Top-Down Approach Rapid construction of a high-level overview—immediate benefit for executive stakeholders Time-consuming for construction of a useful model Overall perspective, including synergy of system elements Less obvious indications of modeling progress Highlights data usage and control logic More support and contact required with senior personnel Bottom-Up Approach Localized effort, quick to find specific user needs Neglects cross-boundary influences Remains bounded within small area of the system Significant rework with small system changes Immediate benefit for implementers Narrow, vertical viewpoint Middle-Out Approach Well suited for existing systems Need to investigate specific details and general principles simultaneously Provides selection of a readily accessible starting point Lack of immediate benefit for either sponsors or implementers data that is manipulated; a middle-out investigation.

A Professional’s Guide to Systems Analysis. 1996, New York: McGraw-Hill. , Object-Oriented Software Engineering: A Use Case Driven Approach. 1992, Harlow, Essex, England: Addison Wesley Longman. L. J. Freiling. Change Cases: Use Cases that Identify Future Requirements. In OOPSLA-96. 1996. , “Putting Use Cases to Work”. The Rational Edge, 2002. February. [7] Leffingwell, D. and D. Widrig, Managing Software Requirements, A Unified Approach. 2000, Boston: Addison-Wesley. 491. , Quality Software Management: Volume I, System Thinking.

A detailed description of each of these model forms would require far more space than my publisher has allotted, so I will take the easy way out and instead direct interested readers to research these topics as a “homework” project. 0 (and its extensions) to illustrate various points; the principles in the following chapters apply to model creation regardless of modeling system. 0 and several of the defined language extensions (referred to as UML Profiles). indb 18 11/19/06 4:15:07 PM A Systematic Approach n 19 Formal Systems Analysis During analysis it is important to consider the following characteristics of systems: n Purpose Intended use of the system n Objectives Goals for system operation n Synergy System total is greater than the sum of its component parts n Trade-Offs Intentional or unintentional compromises to the system A system is developed with a particular purpose based on the needs of the stakeholders who have requested or make use of the system.

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