Conceptual Model

This document was generated using AI assistance

Content may include inaccuracies, outdated information, or technical errors. Users are advised to cross-check critical information before implementation.

A conceptual model records the concepts of a domain and the relationships between them, before any decision about how those concepts will be stored and implemented.

Create the model

Create a model City Transit of the type ConceptualModel and open its diagram. The model has two collections: Concepts and Relationships.

Concepts

Add three Person nodes and set the kind of each, so that the picture fits the role: Passenger (Woman), Driver (Man), Inspector (Detective).

Add two Vehicle nodes: City Bus (Bus) and Depot Shuttle (Minibus).

For concepts without a picture add Concept nodes: Route, Stop, Timetable, Ticket, Fare Zone.

Groups

Add a Group Network and drag Route, Stop and Fare Zone into it. Add a second group Fleet and drag both vehicles into it. A group is itself a concept, and groups nest.

Relationships

Draw the relationships and set the kind of each:

From	To	Kind	Name
Route	Stop	Composition	consists of
Fare Zone	Stop	Aggregation	covers
Timetable	Route	Reference	schedules
City Bus	Route	Association	serves
Driver	City Bus	Association	drives
Passenger	Ticket	Association	buys
Ticket	Fare Zone	Dependency	is priced by
Inspector	Ticket	Usage	checks
Depot Shuttle	City Bus	Generalization

Descriptions and translations

Every element of the model - the model itself, a concept and a relationship - has four attributes: name, description, localizedName and localizedDescription.

Fill in description on the concepts whose meaning is not obvious, Fare Zone for example. Set localized names where another language has an accepted term.