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26 Cards in this Set
- Front
- Back
What is a model and what is modelling? |
Modelling is a way of thinking about things and ideas in the ‘real world’.
A model, in terms of software development, is an abstract representation of a specification, a design or a system, from a particular point of view. In general, it is a simplification of reality, created in order to understand an aspect or viewpoint of the system in question. |
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In terms of the development of software systems, what are models? (3 bullet points) |
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What is a ‘good model’? |
A ‘good model’ is an abstraction that allows those involved to concentrate on the essentials of a complex problem by excluding non-essential details while capturing those of interest. |
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What are the two kinds of rules that govern the use of a diagram-based modelling language? |
There are two distinct kinds of rule:
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When choosing a modelling language, it should be:
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Does a modelling language need to be associated with a particular development process? |
No, a modelling language does not dictate how it should be used and it is up to a development process to define which notations are appropriate and how they should be used. With experience practitioners tend to pick and mix from different modelling languages and use the notations that are most appropriate to the task – most modelling languages do not provide notations for all types of tasks. |
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How does a standard modelling language contribute to software development? |
A standard modelling language helps when new people join a project – a common modelling language reduces the time needed to enable them to become productive team members. Also, when a modelling language is widely used, it is likely that project components will have been constructed using that language. This makes the software easier and cheaper to maintain. |
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Should you try to capture everything about a design in a single model? |
No, because you will be interested in different aspects of a design at different times, and different models of your design will be built to reflect your interpretations of users’ needs. |
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What is the difference between a structural (or static) model and a behaviour (or dynamic) model? |
A structural model describes the elements of the system and their relationships to other elements.
A behaviour model describes the behaviour of a system over a period of time. |
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Do the models used in a given development project need to be consistent? |
Yes, the whole set of diagrams should contain the different aspects of a single software system, so they should not contradict one another. For example, there must be some consistency checking between the static and dynamic models. This can be automated by a suitable tool. |
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What is the Unified Process (UP)? |
The Unified Process is an iterative and incremental development process for building enterprise systems based on an object-oriented approach, and using UML. |
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What is timeboxing? |
Timeboxing means that a (usually) short fixed period – for example, three to four weeks – is devoted to each development iteration. |
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What are the four major phases of a UP project? |
A UP project is organised into four major phases:
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A system’s architecture includes models that address five different views, what are those views? Briefly explain each one. |
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What are the 7 core activities (phases) that will be used in TM354 (based on UP disciplines) to develop software? |
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What is the purpose of the domain modelling phase? (i.e. what do we seek to gain an understanding of by domain modelling?) |
Domain modelling is concerned with gaining an understanding of the environment in which any system that is designed must operate. |
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What artefacts (things) are produced during the domain modelling phase? What is the role of each artefact? |
During domain modelling, we produce the following artefacts:
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What is the purpose of the requirements phase? |
The requirements phase is concerned with establishing and modelling what a software system must do. |
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What is the Volere template? In what phase of software development is the Volere template used? |
The Volere template provides a disciplined way of recording requirements. The requirements phase comes after the domain modelling phase. |
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What is the purpose of the analysis phase? |
In the Analysis phase we start modelling the structure and behaviour of a software solution from a user’s perspective. |
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What is the purpose of the design phase? |
The design phase is concerned with making decisions concerning how a system will meet its specification. |
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What two artefacts are produced during the design phase? What is each artefact's role? |
During design you produce the following artefacts:
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What does UP mean and what are its 2 initial phases? |
UP means unified process.
Its 2 initial phases are Inception and elaboration. |
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What is inception? |
Inception is the initial planning phase of development.
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What is elaboration? |
Elaboration is the phase where most of the analysis and design occur. |
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What is a sprint? |
A sprint is a timeboxed period of a maximum of a month where usable software is delivered. |