A database management system (DBMS) is a computer software for creating and managing databases. The DBMS delivers users and programmers with an organized way to create, retrieve, update and manage data.

A DBMS allows users to run CRUD operation; Create, Read, Update and Delete, in a database. The DBMS basically serves as a boundary between the database & application programs or end users, it guarantees that data is consistently organized and easily accessible.

DBMS helps to achieve three main things; the data, the database engine (that permits data to be retrieved, locked and modified) and Database Schema (describe about logical structure of Database). These three main elements provide concurrency, security, data integrity and uniform administration procedures.

Some popular DBMS software in 2019 are as follow:

1. Microsoft SQL Server

2. My SQL

3. Oracle Database 12c

4. PostgreSQL

5. Amazon Relational Database Service

6. IBM DB2