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What is a Relational Database

Database is a repository of organized collection of data such that data can be easily stored, maintained and retrieved.

Relational database is a database management system (DBMS) that is based on the relational model as introduced by E. F. Codd. The relational model represents the database as a collection of relations. A relation is a jargon used in RDBMS concepts to specify a table.


→ Jargon means words used by IT professionals in RDBMS world.

→ In this article, Table and Relation are used alternately.

Most popular Relational Databases

Here is a list of most popular relational databases as on 2019.

Serial#DatabaseProduct Type
2MySQLOpen Source
3SQL ServerCommercial
4PostgreSQLOpen Source
5IBM DB2Commercial
6Microsoft AccessCommercial
7SQLiteOpen Source
8MariaDBOpen Source
9HiveOpen Source
11SAP SybaseCommercial
12IBM InformixCommercial
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