11.4 Designing Dialogue

Dialogue is a sequence in which information is displayed to and obtained from user. Dialogue design is a process of designing the overall sequences that user needs to follow to interact with an information system. As a system designer, we have to understand how users use the system and from there we can transform these activities into a formal dialogue specification. Dialogue diagram is a formal method used when designing and representing dialogues. Dialogue diagram have one symbol, a box with a three sections. All lines connecting between the boxes are bidirectional. By using dialogue diagram, we can easily represent the sequencing of displays, selection of displays in a system. Figure 11.8 shows an example of dialogue diagram with three types of connection; sequence, iteration and selection.

11.4 Designing Dialogue

Figure 11-9: Example of dialogue diagram with three types of connection; sequence, iteration and selection