Course content Course content
Modelling object-oriented software – an introduction
Modelling object-oriented software – an introduction

Start this free course now. Just create an account and sign in. Enrol and complete the course for a free statement of participation or digital badge if available.

Free course

Modelling object-oriented software – an introduction

3.2.1 Textual analysis

Because a class is conceptually a set of objects of the same kind, and objects represent ‘things’ in the system domain, nouns and noun phrases in the requirements document can be used as an aid to identifying possible classes. A noun phrase is a phrase (a sequence of words like ‘number of copies’) that functions as a noun – and which can be used anywhere that a noun could be used.

Below is an extract from the requirements document for a DVD Library System with the nouns and noun phrases underlined. We have not included the acceptance tests, as these are derived from the use cases, so do not add anything to the description of the system.

M256_1
Print Print

Take your learning further

Making the decision to study can be a big step, which is why you'll want a trusted University. The Open University has 50 years’ experience delivering flexible learning and 170,000 students are studying with us right now. Take a look at all Open University courses.

If you are new to University-level study, we offer two introductory routes to our qualifications. You could either choose to start with an Access module, or a module which allows you to count your previous learning towards an Open University qualification. Read our guide on Where to take your learning next for more information.

Not ready for formal University study? Then browse over 1000 free courses on OpenLearn and sign up to our newsletter to hear about new free courses as they are released.

Every year, thousands of students decide to study with The Open University. With over 120 qualifications, we’ve got the right course for you.

Request an Open University prospectus371