foreign keys

app/models/communication/website/category.rb

app/models/communication/website/post.rb

app/models/communication/website/with_languages.rb

app/models/concerns/with_translations.rb

app/models/education/academic_year.rb

app/models/education/cohort.rb

app/models/education/program/with_alumni.rb

app/models/education/program/with_schools.rb

app/models/education/school/with_programs.rb

app/models/language.rb

app/models/research/hal/author.rb

app/models/research/hal/publication.rb

app/models/research/journal.rb

app/models/research/journal/paper.rb

app/models/research/journal/volume.rb

app/models/research/laboratory.rb

app/models/research/laboratory/axis.rb

app/models/research/thesis.rb

app/models/university/person/with_education.rb

app/models/university/person/with_research.rb