Dev General structure of QDDT

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Stig Norland edited this page Aug 28, 2018 · 8 revisions

This is a simplified view of the datamodel Comments, Groups, Agent and UserAccess is omitted

A Survey is a root element of this model. Every Survey has atleast one Study.
- A Study will have of one or more Modules and atleast one Instrument.
  - An Instrument will have a ordered list of Questions, contained in Question constructs (Control Constructs).
  - A Module (Topic Group) will have one or more Concepts.
    - A Concept consist of one or more QuestionItems.
      - Every QuestionItem will have a Responsedomain.