Database Management Service (DBMS) refers to a suite of software tools and services designed to manage, store, retrieve, and manipulate data in a structured manner. It serves as an interface between the database and the end users or applications, providing functionalities for creating, querying, updating, and deleting data. DBMS provides mechanisms for users to insert, update, delete, and retrieve data from the database using query languages such as SQL (Structured Query Language). This enables users to interact with the database and perform various operations on the data. DBMS optimizes database performance by implementing indexing, query optimization, caching, and other techniques to improve data retrieval and manipulation speed. This ensures that applications can access data efficiently and respond to user requests promptly.