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Kurzbeschreibung
It is a costly fact that a large percentage of information system development projects fail--ending up over budget, behind schedule, or so poorly designed that they remain unused. Essential System Requirements targets the discovery and definition of critical system requirements in the analysis phase of system development--where good design is vital to the success of a project. This book explores a design methodology that involves users early on to describe essential business events. These events then partition the system response into logical, more easily managed segments. The result is a conceptual model that reflects real business needs and accelerates the entire delivery process. Essential System Requirements assembles the information developers need to understand and apply this methodology and condenses it into a concise and practical guide. This book reviews the development life cycle, highlights the importance of requirements, and introduces the concept of business events.It provides a detailed description of experience-based techniques and methods to analyze, specify, and partition the requirements of an information system, covering project tasks and procedures, system behavior, data and process modeling techniques, and the transition to physical design. Inside you will also find a clear description of function point estimation, a promising method of estimating the time and cost of future software projects based on system requirements. In addition, Essential System Requirements shows you how responses to business events can be partitioned across object classes, focusing on the application of use cases in event-driven requirements analysis. Also featured: *A middle-out strategy that is similar to the way humans typically categorize and classify objects. *The need for rapid development combined with a sound, scalable software architecture (RAAD). *A discussion of the changing world market and the related need for adaptive business systems. *The impact of making a major paradigm switch in a corporate software environment and ways to move to an event-driven approach.*The specification of a system response to an event using a business scenario, data model, process model, entity life cycle, and event/entity interaction (CRUD) matrix. With this book as your guide, you will have at hand proven techniques for defining the systems your clients want and setting the stage for a smoother, faster, more easily managed development process. 0201616068B06012001
Synopsis
It is a costly fact that a large percentage of information system development projects fail--ending up over budget, behind schedule, or so poorly designed that they remain unused. Essential System Requirements targets the discovery and definition of critical system requirements in the analysis phase of system development--where good design is vital to the success of a project. This book explores a design methodology that involves users early on to describe essential business events. These events then partition the system response into logical, more easily managed segments. The result is a conceptual model that reflects real business needs and accelerates the entire delivery process. Essential System Requirements assembles the information developers need to understand and apply this methodology and condenses it into a concise and practical guide. This book reviews the development life cycle, highlights the importance of requirements, and introduces the concept of business events.It provides a detailed description of experience-based techniques and methods to analyze, specify, and partition the requirements of an information system, covering project tasks and procedures, system behavior, data and process modeling techniques, and the transition to physical design.Inside you will also find a clear description of function point estimation, a promising method of estimating the time and cost of future software projects based on system requirements. In addition, Essential System Requirements shows you how responses to business events can be partitioned across object classes, focusing on the application of use cases in event-driven requirements analysis. Also featured: *A middle-out strategy that is similar to the way humans typically categorize and classify objects. *The need for rapid development combined with a sound, scalable software architecture (RAAD). *A discussion of the changing world market and the related need for adaptive business systems. *The impact of making a major paradigm switch in a corporate software environment and ways to move to an event-driven approach.*The specification of a system response to an event using a business scenario, data model, process model, entity life cycle, and event/entity interaction (CRUD) matrix. With this book as your guide, you will have at hand proven techniques for defining the systems your clients want and setting the stage for a smoother, faster, more easily managed development process.0201616068B06012001
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1 von 1 Kunden fanden die folgende Rezension hilfreich:
3.0 von 5 Sternen
Some excellent content, but bad style,
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Rezension bezieht sich auf: Essential System Requirements: A Practical Guide to Event-driven Methods (Addison-Wesley Information Technology Series) (Taschenbuch)
This is a good book. It has all the information in it to facilitate gathering software requirements for pretty much any IT project.My problem with the book is the author's style, he just isn't very readable. There is a lot of passive voice and not very many examples of the ideas he presents. If there are examples, they tend to be collected at the back in an appendix where they are much less useful than they would be directly with the idea that needs an example. I feel that the author settled for a less than his best in this book, and frequently stops partway along a direction that would have been much better if it were carried through more fully. There is a little bit of covereage of Entity Relationship Diagrams (ERD), but he gives only a handful of examples and then immediately give a diagram in a section with symbols that aren't covered in any of the previous examples. I was really looking forward to the function point covereage, but function points are covered only marginally well in the book, something that the author pretty much says himself in the first few paragraphs of the chapter on function points. The real strength of the book is in the ideas, which I found very useful. The business event approach is quite powerful and allows the breakdown of projects into independant pieces. Also, the author gives "tips" on project management on how to apply his methods. There are a number of tables and diagrams for representing requirements that were also helpful. A good effort, but I feel that it could have been much better. All the ideas where there, the author mentions them regularly, but just doesn't go all the way. Helfen Sie anderen Kunden bei der Suche nach den hilfreichsten Rezensionen
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