AGILE SOFTWARE DEVELOPMENT AND UML. John O. Iyaniwura BSc (Hons), MSc New Vision Labs Thursday 11 th October, 2012

Transcription

1 AGILE SOFTWARE DEVELOPMENT AND UML John O. Iyaniwura BSc (Hons), MSc New Vision Labs Thursday 11 th October, 2012

2 Overview Agile Software Development, What Is It? Agile Methodology, Why Adopt It? Agile Software Development, Main Features UML- Unified Modeling Language Benefits Of Adopting UML UML- Key Components Agile + UML = Pragmatic Software Development Summary References Questions? 2

3 Agile Software Development, What Is It? An approach to developing software February 2001, 17 Software developers, Snowbird, Utah, USA Manifesto for Agile Software Development We are uncovering better ways of developing software by doing it and helping others do it. Through this work we have come to value: Individuals and interactions over processes and tools Working software over comprehensive documentation Customer collaboration over contract negotiation Responding to change over following a plan That is, while there is value in the items on the right, we value the items on the left more. Source: Accessed: 09/10/2012 3

4 Agile Methodology, Why Adopt It? Agile software development is: incremental - software not delivered in a bigbang! Iterative - development process repeated many times till the desired end-result is achieved. Flexible- changes from clients are accommodated Adaptable- lean more to right than left & vice-versa Transparent - encourages client/user involvement Simple - easily adopted by development teams 4

5 Agile Software Development, Main Features 5

6 UML Unified Modeling Language The Unified Modeling Language - UML - is OMG's most-used specification, and the way the world models not only application structure, behavior, and architecture, but also business process and data structure. - Object Management Group (OMG) UML a notation, both visual and textual, used to model (i.e. describe) various aspects of software and business systems as well processes. John O. Iyaniwura. 6

7 Benefits Of Adopting UML Reduction in time/effort required to enhance software Reduction in cost of correcting errors, i.e. bugs Reduction in time spent building software: re-use Increase in the quality of delivered software Enables communication as design lingua franca Benefits from automated support, reducing errors/bugs, correctness: CASE tools. 7

8 UML, Key Components UML Structure 8

9 Agile + UML = Pragmatic Software Development Software developed with an agile approach together with UML models results in customer satisfaction through early and continuous delivery of valuable software the accommodation of changing requirements even late in development frequent delivery of working software, from a couple of weeks to a couple of months the promotion of sustainable development The pragmatism of this approach has endeared it to software development teams wary of heavy-weight processes e.g. SDLC, Waterfall, Unified Process etc. 9

10 Summary Agile software development is a light-weight development process Agile software development yields software incrementally and in iterations The Unified Modelling Language (UML) is a notation for creating models of software artefacts UML is globally adopted, supported by CASE tools, and improves software quality The combination of agile software development and UML results in software that more closely meets the requirements of clients 10

11 References Agile Manifesto: Principles behind Agile development: The Unified Modeling Language: Agile Modeling: Scrum: All last accessed on 09/10/

12 Questions? 12