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White Papers

White Papers (74)

White papers provide in-depth technical discussion and best practice guidance on a wide range of modeling topics. The information presented by industry experts from the user community will help you learn new approaches to modeling and solving real-world problems using Enterprise Architect.

Friday, 22 July 2011 00:00

Design Driven Testing for Systems

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Design Driven Testing (DDT) for software was first outlined in the book Use Case Driven Object Modeling with UML: Theory and Practice (by Doug Rosenberg and Matt Stephens), and then described in detail in Design Driven Testing: Test Smarter, Not Harder by the same authors. DDT is a highly methodical approach to testing, allowing you to know when you’ve finished – i.e. when you’ve written enough tests to cover the design and the requirements. It helps you to “zoom in” and write algorithmic tests to cover intensive or mission‐critical sections of code, and to know when it’s safe to “zoom…
The attached presentation, from the recent ESRI Developer Summit, presents the design of the hotel mapping application, and discusses bugs that were detected and fixed before product release following the DDT approach. ICONIX has collaborated with Sparx Systems to produce a uniquely powerful set of capabilities for driving testing from Enterprise Architect UML and SysML models. By combining the functionality of Sparx's structured scenario editor and that of the Agile/ICONIX add-in, it's now possible to automatically generate test cases at multiple levels of abstraction. These include two levels of developer testing, including automatic generation of unit test code for JUnit,…
Here is Chapter 7 of Design Driven Testing. This chapter focuses on Acceptance Testing, and leverages Enterprise Architect's Structured Scenario editor heavily to accomplish something we call "use case thread expansion" where all of the sunny day / rainy day permutations of a use case are expanded out into a complete set of tests. In "test driven" approaches to development, unit testing often gets most of the attention. However, unit testing is generally most useful in discovering "errors of Commission" (more poetically, "whoops, I coded that wrong"). Unit testing is of much less help in discovering "errors of Omission" (more…
In today's agile universe, we often hear about "test-driven" approaches to development (TDD). TDD emphasizes unit testing to such an extent that in many companies, regression testing frameworks like JUnit have largely replaced upfront design. Design Driven Testing makes the case that skipping design in favor of unit testing is not only backwards, but also Too Damn Difficult. We thought the best way to prove it was by designing and testing a real production application... My new book Design Driven Testing (co-authored with Matt Stephens) addresses both unit testing by developers and acceptance testing, performed by an independent QA organization.…
This article (which actually represents the third incarnation of the ICONIX Business Modeling Roadmap), leverages two new capabilities from Sparx Systems, now available in Enterprise Architect. These are the Structured Scenario Editor and the Business Rule Composer. The article describes how these two quantum leaps in technology combine synergistically to enable a new process by combining business process modeling with behavioral code generation for business rules.
Monday, 11 October 2010 00:00

SysML Modelling Language explained

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This article introduces the OMG SysML modelling language, dedicated to complex systems combining software and hardware realisations. SysML, adopted in 2006 by the Object Management Group, provides a vocabulary suitable to Systems Engineering e.g. by modelling Blocks instead of classes. SysML uses a subset of UML2 and defines its own extensions, making it a smaller language that is easier to learn and apply. Abstract: UML, the standard modelling language used in the field of software engineering, has been tailored to define a modelling language for systems: SysML or Systems Modeling Language. This article is intended to provide a non-exhaustive presentation…
Tuesday, 28 September 2010 00:00

eBook: Modeling Service Oriented Architectures

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Presents a practical approach to modeling Service-Oriented Architecture solutions from concept to code. Topics include: generating web service interfaces from visual models, BPEL engineering and behavioral code generation. This E-book presents a practical approach to modeling Service-Oriented Architecture solutions from concept to code. The author helps us to understand key SOA concepts and demystifies the "acronym soup" surrounding service-oriented development. Using an illustrated example, the reader is guided through the 'hands-on' ICONIX Process Roadmap for Service-Oriented Architecture. Each step of the roadmap is brought to life using Enterprise Architect Business and Software Engineering edition to derive concrete deliverables from visual…
This text is the second one of the series of articles concerning projects estimation using the function points method. In the first part entitled: “Theoretical Aspects of Projects Estimation Using the Use Case Points Method" theoretical aspects of the function points method have been presented. Here, an example along with mathematical calculations will be discussed.
This text is the first one of the series of articles concerning projects’ estimation in Enterprise Architect. In this section, theoretical aspects of function points methods have been presented.
Monday, 03 September 2012 00:00

Shaping Service Orientation using Smart Use Cases

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Smart use cases is a particulary useful extension to modeling use cases. This white paper demonstrates how to model smart use cases, especially in service oriented architecture projects. In most projects Enterprise Architect is used with a smart use case UML profile to quickly model and even estimate smart use cases. When applying smart use cases to service oriented architecture, Enterprise Architect can even serve as service repository.
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