I'm just making a technical note here. You are referring to the SQL paradigm, as opposed to a database concept. Instead of mentioning the rdbms and then putting words in quotes, don't mention the rdbms at all. :)
I will disagree with you partially, about the rdbms not having those concepts. Row order is important to RDBMS's. For example, Oracle has ROWID which is the actual location of the record itself. (And row pointers if they move!) SQL Server organizes table data based on an index (as does Oracle in IOTs.) Other RDBMS likely have similar concepts. So, there is such a concept in the DB, and a program can make use of it too. It's only SQL that doesn't have the concept.