There are situations where the nature of data is specific and cannot be represented by linear or sequential data structures. For example, as shown in Figure 7.1 hierarchical data such as ‘types of computers’ is non-linear by nature.
Fig. 7.1 Hierarchical data
Situations such as roles performed by an entity, options available for performing a task, parent–child relationships demand non-linear representation. A tourist can go from Mumbai to Goa by any of the options shown ...