I've basically just said that, e.g., instead of the identifier EmployeeTheNumberThatIdentifiesATupleInARelation, you should really be using the identifier EmployeePrimaryKey. That is, you usually refer to things using the name of the respective concept, not by describing what the thing's concept is every time you're trying to refer to the thing. It's called "coining a term". Or, in programming, abstraction (as per SICP, that is giving a name to some compound construct so as not to be forced to repeat it endlessly).