Complement S2DM with an structured methodology for the modeling

[jdacoello]

Should we define a step-by-step methodology for data modeling. For example, similar to how ontology modeling is done:

Adapted from: N. Noy and M. Deborah, “Ontology Development 101: A Guide to Creating Your First Ontology,” 2001. Accessed: Apr. 28, 2020. [Online]. Available: https://protege.stanford.edu/publications/ontology_development/ontology101.pdf