リレーショナルDBMS でぃうびいえむえすでしょう
rirēshonarudiubiiemuesudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of リレーショナルDBMS

1. Relational DBMS, probably.; It will likely be a relational DBMS.

Polite
Presumptive
Conjecture
Computing