Most used Database by Developers in 2021

Q . What is a Database ?

Ans : A database is an application that store the collection of records. It can be easily accessed and managed by the user very easily. it organize data into tables form 

There are two types of Database : 

1. RDBMS (Relational Database Management System)

__ MySQL :  MySQL is one the most popular open-source DBMS (Database Management System) . MySQL easy to use reliable and fast. The Oracle developed database is a client/server-side system that consists of a multi-threaded SQL server.

__ Oracle : An Oracle database is a collection of data treated as a unit. The purpose of a database is to store and retrieve related information. A database server is the key to solving the problems of information management

__ PostgreSQL : PostgreSQL is an open-source object-relational database system. Some of the key features of PostgreSQL include reliability, robustness, and performance. It also uses and extends the SQL language combined with many features that store and scale the complicated data workloads

__ SQLite : This is an in-process library that implements a self-contained, serverless, zero-configuration and transactional SQL database engine. SQLite does not have any separate server process.

2.  Document Database :

__ MangoDB : MongoDB is the leading modern, general purpose database platform, designed to unleash the power of software and data for developers and the applications they build.

__ Amazon Dynamo DB :  Amazon DynamoDB is a key-value, NoSQL, document database that delivers single-digit millisecond performance at any scale. It's a fully managed, multiregion, multi master, durable database with built-in security, backup and restore, and in-memory caching for internet-scale applications. 

__ Google Cloud Firestore : Cloud Firestore is a NoSQL document database that lets you easily store, sync, and query data for your mobile and web apps - at global scale.