A database is a collection of information that is collected, organized, and stored so that it can easily be accessed, managed, and updated. Data is managed to some level of quality (measured in terms of accuracy, availability, usability, and resilience) and this in turn often implies the use of a general-purpose database management system (DBMS).
Nowadays, maintaining records is very crucial especially in businesses. And, after the invention of computer it has become very easy to keep records. As Internet hit the scene and global exposure got available to businesses and webs, the significance of a database management system became indisputable.
So, database management systems basically allow access to the users to the desired data with a few clicks from their computers on the same network.
DBMS became RDBMS, Relational Database Management System when multiple databases could be accessed on the same server. RDBMS is now mostly written in MySQL. It even helps to maintain web content and office records or store archives.
SQL is a simplistic programming language that is used in relational databases. Oracle and SQL Server are popular commercial relational databases. MySQL is a very popular Open Source relational database. Thus, a relational database is a wonderful piece of equipment for storing large quantities of data efficiently.