BIS2311Topic2
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The document discusses software development processes and the use of UML (Unified Modeling Language). It describes the iterative and incremental development life cycle model, which involves repeating development phases with increasing refinement through iterations and focusing on important aspects through increments. This allows for continuous input from users, addressing issues early, and handling large projects. The document also explains that UML was developed to combine best practices from object-oriented programming and analysis/design, and that it has become a standard for modeling object-oriented systems due to providing abstract representations of designs and relationships between elements.
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types of soil
This document provides summaries of different soil types found in India:
- Black soil is dark grey to black in color with high clay content. It is found in 5.4 lakh sq km and suitable for cotton.
- Red soil is formed from weathered crystalline rocks. It is more sandy, less clayey, and poor in nutrients. It covers 3.5 lakh sq km.
- Laterite soil is brown to yellowish in color and forms a hard material used for building when exposed to air.
- Desert soil is sandy, porous, and low in nutrients and moisture. It covers 1.4 lakh sq km.
- Mountain soil is rich in humus and found in northeastern
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The document discusses the systems development life cycle (SDLC) and approaches to system development. It describes the phases of the SDLC as including planning, analysis, design, implementation, and support. Projects can use a predictive or adaptive approach to the SDLC. Current trends incorporate agile methods like Extreme Programming, the Unified Process, Agile Modeling, and Scrum. Methodologies utilize models, techniques, and tools to guide activities in each SDLC phase.
Software development life cycle
The document discusses various software development life cycle models, including:
- The waterfall model, which progresses through sequential stages from requirements to maintenance. It allows for predictability but not flexibility.
- Iterative models like prototyping and incremental development, which allow delivering functionality in phases to get early user feedback.
- The V-model which emphasizes verification and validation activities at each stage.
- Agile methods like Scrum and eXtreme Programming which are iterative, incremental and emphasize adaptability over heavy documentation.
Information Systems Analysis and Design Overview of OOAD, UML, and RUP
The document provides an overview of object-oriented analysis and design (OOAD), the Unified Modeling Language (UML), and the Rational Unified Process (RUP). It discusses key OO concepts like classes, objects, encapsulation, inheritance, and polymorphism. It also outlines the phases and disciplines of RUP, including inception, elaboration, construction, and transition. Iterative development and UML diagrams like use cases and class models are presented as core parts of the OO analysis and design methodology.
l1_introuml.pdf
This document provides an introduction to the Unified Modeling Language (UML). It outlines the course information for an Introduction to UML course, including aims, objectives, assessment, and recommended books. It then describes what UML is and lists common UML tools. The document explains that UML defines 13 types of diagrams divided into categories for structure, behavior, and interaction. Examples of different UML diagrams are provided, including class, object, component, and use case diagrams. Guidelines are given for modeling with UML, including the development process, types of models, and use case modeling syntax, semantics, and examples.
Workflow management
Nowadays, the integration between process management and distributed systems has significantly grown. This paper tries to delineate the main features that affected and are going to interest workflow management.
To begin with main process management definitions will be provided, then, a focus on workflow concepts and workflow management technology. Finally, social organization of work, coordination and new agents-based development will give a view of old and new fields that are going to improve workflow management technology.
Various Approaches Of System Analysis
The document discusses the Unified Modeling Language (UML) and its role in object-oriented analysis and design. It describes UML as a graphical language used to visualize, specify, construct, and document software systems. UML provides tools and features to support complex systems using object-oriented concepts and methodology. UML diagrams are used to model system designs, with the key UML diagrams being class, sequence, use case, state machine, and activity diagrams. The document also briefly mentions some criticisms of UML regarding when diagrams should be used and how frequently they need to be updated.
Application Of Uml Using Uml Diagrams Used At Each Stage...
UML (Unified Modeling Language) is a standardized modeling language used to visualize, specify, construct and document software systems. It provides graphical tools like diagrams to model different views of a system. The key UML diagrams used at different stages of software development are:
1. Class diagrams are used in analysis to model the static view and show object relationships.
2. Sequence and component diagrams are used in design to model dynamic and architectural views.
3. Deployment diagrams are used in implementation to model how software components are deployed on hardware.
Difference Between Agile And Waterfall Model
The document discusses different software development methodologies used by programming teams, including the system development life cycle (SDLC), agile methodology, and extreme programming. SDLC is used for large projects with many developers, following a structured process from requirements to maintenance. Agile methodology is designed for smaller projects and favors rapid, iterative development. Extreme programming emphasizes close communication between developers and customers to adapt quickly to changing needs. While different, agile methodologies provide advantages for developing software faster and adapting more easily to customer requirements compared to SDLC and extreme programming.
Software process life cycles
The document discusses various software process life cycle models, including:
- Waterfall model which progresses in linear stages from requirements to maintenance. It values predictability but is inflexible to changes.
- Prototyping model which adds prototyping stages to explore risks before full development.
- V model which mirrors each development phase with a testing phase. It emphasizes verification and validation.
- Iterative and incremental models like RUP which develop software iteratively in phases and increments, releasing early and often. This is more flexible and reduces risks compared to waterfall.
- Agile methods are also iterative and incremental but emphasize lightweight processes, adaptation, and flexibility over heavy documentation.
The
01lifecycles
- The Rational Unified Process (RUP) is an iterative software development process framework that uses UML. It consists of four main phases - Inception, Elaboration, Construction, and Transition - which iterate over many cycles.
- The phases focus on establishing feasibility, implementing core architecture, adding remaining elements, and deployment/testing. Artifacts like use cases and UML diagrams are produced.
- Agile methods like RUP are iterative, incremental, and emphasize flexibility over heavy documentation. This allows risks to be reduced by revealing problems earlier compared to traditional waterfall models.
testing
The document discusses several software development lifecycle models and methodologies:
- The waterfall model is a linear sequential model where each phase must be completed before the next begins.
- Prototyping models involve iterative development where initial prototypes are created, tested by customers, and refined based on feedback.
- RAD aims for rapid development through reuse of components and automated tools.
- Spiral models combine prototyping and waterfall approaches in iterative cycles to refine requirements and reduce risks.
- RUP divides projects into inception, elaboration, construction, and transition phases using disciplines like requirements and testing.
- EUP extends RUP with additional phases for production and retirement and disciplines for operations and enterprise-level concerns.
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BIS2311Topic2
- 2. Idealised Information System Development Does this life cycle apply in the real world? Design Implement Requirements Analysis
- 3. The System was finished and the tests were concluded, The users’ last changes were even included, and the user exclaimed with a snarl and a taunt, “ It’s just what I asked for, but not what I want” User Satisfaction
- 4. Requirements Classic Life Cycle or Traditional Life Cycle (TLC) or “ Waterfall Model” Also see last week’s slides Analysis Design Implement Towards completion? Nothing gained if the project is discontinued Late discovery of problems lead to cost escalation Clients see nothing until implementation Shifting requirements - not reflected in the implementation Development Maintenance
- 8. Iteration, Incrementation (1) Source: ch2, An Introduction to Object-Oriented Systems Analysis and Design with UML and the Unified Process, 2004, Schach, S
- 9. Iteration, Incrementation (2) Source: ch2, An Introduction to Object-Oriented Systems Analysis and Design with UML and the Unified Process, 2004, Schach, S
Editor's Notes
- As described in chapter1, ideally IS Linear and from scratch. No we do mistakes & requirements of client change
- Implementation has coding & testing