Process-data diagram: Difference between revisions

Revision as of 06:46, 16 August 2015

Revision as of 19:40, 8 June 2016

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[[File:Process-Data Diagram 01.jpg|thumb|360px|right|The process data diagram]]

A '''process-data diagram''' is a [[diagram]] that describes [[process (computing)|process]]es and [[data]] that act as output of these processes. On the left side the [[meta-process model]] can be viewed and on the right side the [[metadata modeling| meta-data model]] can be viewed.<ref name="WSVB">I. Van de Weerd, J. Souer, J. Versendaal and [[Sjaak Brinkkemper]] (2005). ''Situational Requirements Engineering of Web Content Management Implementations''. SREP2005.</ref>

A process-data diagram can be seen as combination of ana [[business process model]] and [[data model]].

== Overview ==

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=== Sequential activities ===

{{main article|Activity diagram}}

Sequential activities are activities that need to be carried out in a pre-defined order. The activities are connected with an arrow, implying that they have to be followed in that sequence. Both activities and sub-activities can be modeled in a sequential way. In Figure 1 an activity diagram is illustrated with one activity and two sequential sub-activities. A special kind of sequential activities are the start and stop states, which are also illustrated in Figure 1.