History
The basic idea behind the SEQUAL framework is, that "conceptual models can be considered as sets of statements in a language, and therefor can be evaluated in semiotic/linguistic terms". A first semiotic framework for evaluating conceptual models was originally proposed by Lindland et al. in the 1994 article "Understanding quality in conceptual modeling". In its initial version, it considered three quality levels:
- syntactic,
- semantic, and
- pragmatic quality
The framework was later extended, and called the SEQUAL framework by Krogstie et al. in the 1995 article "Defining quality aspects for conceptual models". in the 2002 article "Quality of interactive models" Krogstie & Jørgensen extended the initial framework adding more levels of Stamper’s semiotic ladder.
Read more about this topic: SEQUAL Framework
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