Singular. I'd call an array containing a bunch of user row representation objects 'users', but the table is 'the user table'. Thinking of the table as being nothing but the set of the rows it contains is wrong, IMO; the table is the metadata, and the set of rows is hierarchically attached to the table, it is not the table itself.
I use ORMs all the time, of course, and it helps that ORM code written with plural table names looks stupid.
