Also related: I skimmed classic Codd paper "A relational model of data for large shared data banks" which gave birth to RDMS. Codd uses singular nouns for exa

Also related: I skimmed classic Codd paper "A relational model of data for large shared data banks" which gave birth to RDMS. Codd uses singular nouns for example relation names: PART, PROJECT, COMMIT, supply, component, employee, jobhistory, salaryhistory. The only exception is "children" relation. So that's one small argument in favour of singular approach :)