A database management system (DBMS) is a software system that helps users to create, organize, manage and manipulate databases. It acts as an interface between the user, the database, and the applications that access the database. Some of the key components of a DBMS include the database schema, data dictionary, data manipulation language (DML), data query language (DQL), and data control language (DCL). Here you will find its advantages, disadvantages, features and characteristics.