The relational database management system is the backbone of every database. No matter what relational database you work with, you’ll be using its RDBMS to interact with its data. What Does RDBMS Stand for? The acronym “RDBMS” stands for “relational database management system,” which is the part of the database that allows you to interact with the data. Sometimes alternate acronyms are used, especially “DBMS” in relation to a database that is not necessarily relational.